JP2945872B2 - Spiral wound gasket - Google Patents
Spiral wound gasketInfo
- Publication number
- JP2945872B2 JP2945872B2 JP8173091A JP17309196A JP2945872B2 JP 2945872 B2 JP2945872 B2 JP 2945872B2 JP 8173091 A JP8173091 A JP 8173091A JP 17309196 A JP17309196 A JP 17309196A JP 2945872 B2 JP2945872 B2 JP 2945872B2
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- outer ring
- spiral wound
- wound gasket
- rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Description
【0001】[0001]
【発明の属する技術分野】この発明は、例えばLNG
(液化天然ガス)やその他の気体、液体を流通する管路
のフランジ部相互間をシールするようなうず巻形ガスケ
ットに関する。TECHNICAL FIELD The present invention relates to, for example, LNG
The present invention relates to a spiral-wound gasket that seals between flange portions of a pipeline that circulates (liquefied natural gas) and other gases and liquids.
【0002】[0002]
【従来の技術】従来、上述例のうず巻形ガスケットとし
ては例えば図3に示す構造のものがある。すなわち、内
輪31の外周側にフープ材32aおよびフィラ材32b
をうず巻き状に巻回してガスケット本体33を構成し、
このガスケット本体33の外周側に外輪34を配置した
もので、このように構成されたうず巻形ガスケット35
を、LNG(液化天然ガス)やその他の気体、液体を流
通する管路36のフランジ部37,38間に介設して使
用するものである。2. Description of the Related Art Conventionally, as the spiral wound gasket of the above-mentioned example, there is, for example, one having a structure shown in FIG. In other words, the hoop member 32a and filler material on the outer peripheral side of the inner ring 31 32 b
Is spirally wound to form a gasket body 33,
An outer ring 34 is arranged on the outer peripheral side of the gasket main body 33. The spiral-wound gasket 35 thus configured
Is used by being interposed between the flange portions 37 and 38 of the pipeline 36 that circulates LNG (liquefied natural gas) and other gases and liquids.
【0003】上述のフランジ部37,38は一般に炭素
鋼、ステンレス、アルミニウム、アルミ合金などの金属
材料で構成され、上述のフープ材32aはアルミテープ
等を併用することもあるが主としてステンレスが用いら
れ、上述のフィラ材32bはアスベスト、黒鉛、PTF
E、無機紙などが用いられ、上述の内外輪31,34は
一般に炭素鋼、ステンレスなどの金属材料で構成され
る。The above-mentioned flange portions 37 and 38 are generally made of a metal material such as carbon steel, stainless steel, aluminum, or aluminum alloy. The above-mentioned hoop material 32a is sometimes made of aluminum tape or the like, but stainless steel is mainly used. , above filler material 32 b is asbestos, graphite, PTF
E, inorganic paper, or the like is used, and the above-mentioned inner and outer rings 31, 34 are generally made of a metal material such as carbon steel or stainless steel.
【0004】而して、上述のフランジ部37,38とフ
ープ材32a(金属テープのこと)とは経済性や材料の
入手の難易度に起因して必ずしも同材質にて構成される
とは限らず、上述のフランジ部37,38とフープ材3
2aとが異種金属で構成された場合には、使用時におい
て異種金属相互の接触により接触電位差が発生する。The above-mentioned flange portions 37 and 38 and the hoop material 32a (metal tape) are not always made of the same material due to economy and difficulty in obtaining the material. The flanges 37 and 38 and the hoop 3
When 2a is composed of a dissimilar metal, a contact potential difference occurs due to contact between dissimilar metals during use.
【0005】ここに接触電位差とは、異種の金属を接触
させた時に生じる界面電位差のことであって、2つの導
電性の固体または液体の相を接触させた時、両相の外部
電位の間に生じる電位差(ボルタ電位差)として認識さ
れている。The term "contact potential difference" as used herein refers to an interface potential difference generated when different kinds of metals are brought into contact with each other. Is recognized as a potential difference (voltaic potential difference) that occurs at
【0006】しかも、上述の外輪34とフランジ部3
7,38の対向面との間には隙間gが存在するので、こ
の隙間gに溜った雨水、海水、水滴などの電解質が上述
の異種金属接触部位に侵入すると、接触電位差と電解質
とで電池が構成され、電流が流れることによりフランジ
部37,38またはうず巻形ガスケット35が局部的に
腐食する問題点があった。特に図3に示したようなレイ
ズドフェース(段差面)を有するフランジ部37,38
の場合には斯る問題点が顕著であった。In addition, the outer ring 34 and the flange 3
The gap g exists between the facing surfaces of the 7, 38, battery rainwater collected in the gap g, seawater, electrolytes such as water droplets entering the bimetallic site above result, the contact potential difference between the electrolyte And there is a problem that the flange portions 37, 38 or the spiral gasket 35 are locally corroded by the flow of electric current. In particular, flange portions 37 and 38 having a raised face (stepped surface) as shown in FIG.
In the case of the above, such a problem was remarkable.
【0007】[0007]
【発明が解決しようとする課題】この発明の請求項1記
載の発明は、大気側に位置する外輪と被シール部材(フ
ランジ部など)の対向面との間の隙間を埋めるように絶
縁軟質部材を配設することで、上述の隙間をなくして、
雨水、海水、水滴などの電解質の侵入、滞留を防止する
と共に、軟質部材として電気絶縁部材を用いることで、
電池が形成されるのを阻止して、被シール部材またはガ
スケットの腐食を防止することができるうず巻形ガスケ
ットの提供を目的とする。According to the first aspect of the present invention, an insulating soft member is provided so as to fill a gap between an outer ring located on the atmosphere side and a facing surface of a member to be sealed (a flange portion or the like). By arranging the above, eliminating the above gap,
Rainwater, seawater, preventing the penetration and retention of electrolytes such as water droplets, and by using an electrically insulating member as a soft member,
An object of the present invention is to provide a spiral wound gasket capable of preventing formation of a battery and preventing corrosion of a member to be sealed or a gasket.
【0008】この発明の請求項2記載の発明は、上記請
求項1記載の発明に目的と併せて、上述の絶縁軟質部材
としてPTFEソリッド体、多孔質PTFE、ソリッド
ゴム、スポンジゴムもしくはゴムシーラントを用いるこ
とで、既存の材料を有効利用しつつ上記電解質の侵入を
確実に防止して、シール性能の向上を図ることができる
うず巻形ガスケットの提供を目的とする。According to a second aspect of the present invention, in addition to the object of the first aspect, a PTFE solid body, a porous PTFE, a solid rubber, a sponge rubber or a rubber sealant is used as the insulating soft member. An object of the present invention is to provide a spiral-wound gasket capable of reliably preventing the intrusion of the electrolyte while effectively utilizing an existing material and improving sealing performance.
【0009】[0009]
【課題を解決するための手段】この発明の請求項1記載
の発明は、ガスケット本体の外周に外輪を有し、被シー
ル部材間に介設されて被シール部材間をシールするうず
巻形ガスケットであって、上記外輪の両側面に、該外輪
と被シール部材の対向面との間の隙間を埋める絶縁軟質
部材が配設されたうず巻形ガスケット。According to a first aspect of the present invention, there is provided a spiral wound gasket having an outer ring on an outer periphery of a gasket main body and interposed between members to be sealed to seal between the members to be sealed. a is, on both sides of the outer ring, the outer ring and the spiral wound gasket insulation soft member Ru fills a gap is disposed between the facing surfaces of the sealing member.
【0010】この発明の請求項2記載の発明は、上記請
求項1記載の発明の構成と併せて、上記絶縁軟質部材は
PTFEソリッド体、多孔質PTFE、ソリッドゴム、
スポンジゴムもしくはゴムシーラントに設定されたうず
巻形ガスケット。According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the insulating soft member is made of PTFE solid body, porous PTFE, solid rubber,
Spiral wound gasket set in sponge rubber or rubber sealant.
【0011】[0011]
【発明の作用及び効果】この発明の請求項1記載の発明
によれば、大気側に位置する外輪の両外側面に、該外側
面と被シール部材の対向面との間の隙間を埋める絶縁軟
質部材を配設したので、この絶縁軟質部材により上述の
隙間をなくして、雨水、海水、水滴などの電解質が侵
入、滞留するのを防止することができ、加えて、軟質部
材としては電気絶縁部材を用いたので、接触電位差に起
因して電池が形成されるのを阻止して、フランジ部など
の被シール部材またはうず巻形ガスケットそれ自体が腐
食するのを防止することができる効果がある。According to the first aspect of the present invention, both outer surfaces of the outer ring located on the atmosphere side are provided with the outer ring.
Since the insulation soft member Ru fill the gap between the surface and the facing surface of the sealing member is disposed, this eliminates the aforementioned gap by insulating soft member, rainwater, seawater, an electrolyte, such as water droplets entering the residence In addition, since the electrically insulating member is used as the soft member, the battery is prevented from being formed due to the contact potential difference, and the sealed member such as the flange portion or the vortex is prevented. There is an effect that the wound gasket itself can be prevented from being corroded.
【0012】この発明の請求項2記載の発明によれば、
上記請求項1記載の発明の効果と併せて、上述の絶縁軟
質部材をPTFEソリッド体、多孔質PTFE、ソリッ
ドゴム、スポンジゴムもしくはゴムシーラントに設定し
たので、既存の材料を有効利用しつつ上述の電解質の侵
入を確実に防止して、シール性能の向上を図ることがで
きる効果がある。すなわち上述の各材料はガスケット本
体よりも軟質で、かつ電気絶縁性を備えるうえ、適宜の
密度および材料固有の弾性を備えているので、周囲温度
の変動に起因してフランジ部などの被シール部材が熱膨
張、収縮した時、前述の隙間も変動するが、この隙間変
動に良好に追従して隙間を埋めることができて、シール
性能の向上を図るものである。According to the second aspect of the present invention,
In addition to the effect of the first aspect of the present invention, the above-mentioned insulating soft member is set to PTFE solid body, porous PTFE, solid rubber, sponge rubber or rubber sealant. This has the effect of reliably preventing intrusion of the electrolyte and improving the sealing performance. That is, since each of the above-mentioned materials is softer than the gasket main body and has electrical insulation properties, and has an appropriate density and elasticity inherent to the material, a member to be sealed such as a flange portion due to a change in the ambient temperature. Although the above-mentioned gap also fluctuates when is thermally expanded and contracted, the gap can be satisfactorily followed to fill the gap and the sealing performance is improved.
【0013】[0013]
【実施例】この発明の一実施例を以下図面に基づいて詳
述する。図面はうず巻形ガスケットを示し、このうず巻
形ガスケット1は、内輪2の外周側にフープ材3aおよ
びフィラ材3bをうず巻き状に巻回してガスケット本体
4を構成し、このガスケット本体4の外周側に外輪5を
配置したもので、このうず巻形ガスケット1をLNG
(液化天然ガス)やその他の気体、液体を流通する管路
6のフランジ部7,8(被シール部材)間に介設し使用
すべく構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows a spiral-wound gasket. The spiral-wound gasket 1 constitutes a gasket body 4 by winding a hoop material 3a and a filler material 3b around the outer periphery of an inner ring 2 in a spiral manner. The outer ring 5 is arranged on the side, and this spiral wound gasket 1 is LNG
(Liquefied natural gas) and other gasses and liquids, and is arranged between flange portions 7 and 8 (members to be sealed) of a conduit 6 for use.
【0014】ここで、大気側に位置する外輪5の両側面
と被シール部材としてのフランジ部7,8の対向面とし
てのレイズドフェース部との間、詳しくはガスケット本
体4の外径部からレイズドフェース部の外径部に相当す
る間には、その隙間(具体的には厚さ1mm程度の隙間)
を埋めるように外輪5の両側面に絶縁軟質部材9(充填
部材)を配設している。上述の絶縁軟質部材9としては
PTFEソリッド体、多孔質PTFE、ソリッドゴム、
スポンジゴムもしくはゴムシーラントを用いることがで
きる。[0014] Here, between the raised de face portion of the opposite surfaces of the flange portions 7 and 8 of the both side surface and the sealing member of the outer ring 5 located on the atmosphere side, specifically from the outer diameter portion of the gasket body 4 The gap (specifically, a gap with a thickness of about 1 mm) between the raised face part and the outer diameter part
Insulating soft members 9 (filling members) are arranged on both side surfaces of the outer ring 5 so as to fill the gap. As the above-mentioned insulating soft member 9, PTFE solid body, porous PTFE, solid rubber,
Sponge rubber or rubber sealant can be used.
【0015】上述の各材料の内100%PTFEからな
る多孔質PTFEテープを用いる場合には、その密度が
0.4〜0.8g/cm3 のものを選定し、外輪5の所定部
に例えば両面テープなどの固定手段にて固定する。また
PTFEソリッド体を用いる場合には、その密度が2.
1〜2.2g/cm3のものを選定し、外輪5の所定部に例
えば両面テープなどの固着手段にて固定する。In the case of using a porous PTFE tape made of 100% PTFE among the above-mentioned materials, a tape having a density of 0.4 to 0.8 g / cm 3 is selected, and a predetermined portion of the outer ring 5 is provided on a predetermined portion of the outer ring 5, for example, on both sides. Fix with fixing means such as tape. When a PTFE solid body is used, its density is 2.
1 to 2.2 g / cm3 is selected and fixed to a predetermined portion of the outer ring 5 by a fixing means such as a double-sided tape.
【0016】つまり絶縁軟質部材9としてPTFE系材
料を用いる時には、密度を0.4〜2.2g/cm3 の範囲
に設定する。さらに上述の各材料のうちソリッドゴム
(シリコンゴム等)を用いる場合には、その密度が0.
91〜1.8g/cm3 のものを選定し、外輪5の所定部に
例えば両面テープなどの固着手段にて固定する。That is, when a PTFE-based material is used as the insulating soft member 9, the density is set in the range of 0.4 to 2.2 g / cm3. Further, when solid rubber (silicon rubber or the like) is used among the above-mentioned materials, the density of the rubber is set to 0.1.
A material having a weight of 91 to 1.8 g / cm3 is selected and fixed to a predetermined portion of the outer ring 5 by a fixing means such as a double-sided tape.
【0017】さらにまたスポンジゴム(シリコンゴム製
スポンジゴムテープ等)を用いる場合には、その密度が
0.55〜0.83g/cm3 のものを選定し、外輪5の所
定部に例えば両面テープなどの固着手段にて固定する。
つまり絶縁軟質部材9としてゴム系材料を用いる時に
は、密度を0.5〜1.8g/cm3 の範囲に設定する。When a sponge rubber (such as a sponge rubber tape made of silicone rubber) is used, a sponge rubber having a density of 0.55 to 0.83 g / cm3 is selected. Fix with fixing means.
That is, when a rubber-based material is used as the insulating soft member 9, the density is set in the range of 0.5 to 1.8 g / cm3.
【0018】一方、上述の絶縁軟質部材9としてゴムシ
ーラントを用いる場合には、例えばシリコンシーラント
を外輪5の所定部に塗布し、硬化するまで放置し、硬化
後においてうず巻形ガスケット1をフランジ部7,8間
に介設する。なお、上述のフランジ部7,8、フープ材
3a、フィラ材3b、内外輪2,5としては既述した材
料が使用される。On the other hand, when a rubber sealant is used as the above-mentioned insulating soft member 9, for example, a silicone sealant is applied to a predetermined portion of the outer ring 5, and left to be cured, and after the curing, the spiral wound gasket 1 is attached to the flange portion. It is interposed between 7 and 8. The above-mentioned materials are used for the flange portions 7 and 8, the hoop material 3 a, the filler material 3 b, and the inner and outer rings 2 and 5.
【0019】すなわちフランジ部7,8は炭素鋼、ステ
ンレス、アルミニウム、アルミ合金などの金属材料で構
成され、上述のフープ材3aは主としてステンレスで構
成され、フィラ材3b上述の内輪2および外輪5は炭素
鋼、ステンレス、アルミニウム、アルミ合金などの金属
材料で構成されている。また図1において10,11は
両フランジ部7,8を締結するために用いる締結部材と
してのボルト、ナットである。That is, the flange portions 7 and 8 are made of a metal material such as carbon steel, stainless steel, aluminum and an aluminum alloy, the above-mentioned hoop material 3a is mainly made of stainless steel, and the above-mentioned inner ring 2 and outer ring 5 are made of the filler material 3b. It is made of a metal material such as carbon steel, stainless steel, aluminum, and aluminum alloy. In FIG. 1, reference numerals 10 and 11 denote bolts and nuts as fastening members used to fasten the flange portions 7 and 8.
【0020】このように、大気側に位置する外輪5と被
シール部材としてのフランジ部7,8の対向面との間の
ガスケット締付時の隙間を埋めるように上述の絶縁軟質
部材9を配設したので、この絶縁軟質部材9により上述
の隙間をなくして、雨水、海水、水滴などの電解質が侵
入、滞留するのを防止することができ、加えて、軟質部
材9としては電気絶縁部材を用いたので、接触電位差に
起因して電池が形成されるのを阻止して、フランジ部
7,8などの被シール部材またはうず巻形ガスケット1
それ自体が腐食するのを防止することができる効果があ
る。なお、管路6内を流通するLNGその他の流体は内
輪2側にてシールされる。As described above, the above-mentioned insulating soft member 9 is arranged so as to fill the gap when the gasket is tightened between the outer ring 5 located on the atmosphere side and the facing surfaces of the flange portions 7 and 8 as the members to be sealed. Since the insulating soft member 9 eliminates the above-mentioned gaps, it is possible to prevent the electrolyte such as rainwater, seawater, and water droplets from entering and staying therein. Since the battery is used, the formation of a battery due to the contact potential difference is prevented, and the sealed member such as the flange portions 7 and 8 or the spiral wound gasket 1
This has the effect of preventing the corrosion of itself. Note that LNG and other fluids flowing through the pipeline 6 are sealed on the inner ring 2 side.
【0021】また、上述の絶縁軟質部材9をPTFEソ
リッド体、多孔質PTFE、ソリッドゴム、スポンジゴ
ムもしくはゴムシーラントに設定したので、既存の材料
を有効利用しつつ上述の電解質の侵入を確実に防止し
て、シール性能の向上を図ることができる効果がある。
すなわち上述の各材料はガスケット本体4よりも軟質
で、かつ電気絶縁性を備えるうえ、適宜の密度および材
料固有の弾性を備えているので、周囲温度の変動に起因
してフランジ部7,8などの被シール部材が熱膨張、収
縮した時、前述の隙間も変動するが、この隙間変動に良
好に追従して隙間を埋めることができて、シール性能の
向上を図るものである。ここで上述の絶縁軟質部材9は
その弾力性等から多孔質PTFEテープのような多孔質
もしくはスポンジ状のものが望ましい。Further, since the above-mentioned insulating soft member 9 is made of PTFE solid body, porous PTFE, solid rubber, sponge rubber or rubber sealant, the above-mentioned electrolyte is surely prevented from invading while effectively utilizing existing materials. Thus, there is an effect that the sealing performance can be improved.
That is, each of the above-mentioned materials is softer than the gasket main body 4 and has electrical insulation properties, and also has appropriate density and elasticity inherent to the material. When the member to be sealed thermally expands and contracts, the above-mentioned gap also fluctuates. However, the gap can be filled by following the gap fluctuation satisfactorily, thereby improving the sealing performance. Here, the above-mentioned insulating soft member 9 is desirably a porous or sponge-like material such as a porous PTFE tape because of its elasticity and the like.
【0022】図2はうず巻形ガスケットの他の実施例を
示し、図1で示した先の実施例にあってはレイズドフェ
ースタイプのフランジ部7,8間に介設するうず巻形ガ
スケットを示したが、この図2の実施例にあってはフラ
ットフェースタイプのフランジ部7,8間に介設するう
ず巻形ガスケットを示している。FIG. 2 shows another embodiment of the spiral-wound gasket. In the previous embodiment shown in FIG. 1, a spiral-wound gasket provided between the raised face type flanges 7 and 8 is used. As shown, the embodiment of FIG. 2 shows a spiral wound gasket interposed between flat face type flange portions 7 and 8.
【0023】この場合は同図に示すように外輪5の上下
両面全体を覆うように絶縁軟質部材9,9を固着配置す
る。このように構成してもガスケット締付時の隙間をな
くして、電解質の侵入・滞留防止と電池形成阻止との両
立を図る等、先の実施例と略同様の作用、効果を奏する
ので、図2において図1と同一の部分には、同一符号を
付して、その詳しい説明を省略する。In this case, as shown in the figure, insulating soft members 9 are fixedly arranged so as to cover the entire upper and lower surfaces of the outer ring 5. Even with such a configuration, the same operation and effect as in the previous embodiment are achieved, such as eliminating the gap at the time of tightening the gasket and achieving both prevention of intrusion / retention of the electrolyte and prevention of battery formation. In FIG. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.
【0024】この発明の構成と、上述の実施例との対応
において、この発明の被シール部材はフランジ部7,8
に対応するも、この発明は、上述の実施例の構成のみに
限定されるものではない。In correspondence between the structure of the present invention and the above-described embodiment, the member to be sealed according to the present invention has flange portions 7 and 8.
However, the present invention is not limited to the configuration of the above-described embodiment.
【図1】 本発明のうず巻形ガスケットをレイズドフェ
ースタイプのフランジ部間に介設した状態で示す断面
図。FIG. 1 is a cross-sectional view showing a spiral wound gasket of the present invention interposed between raised face type flange portions.
【図2】 本発明のうず巻形ガスケットをフラットフェ
ースタイプのフランジ部間に介設した状態で示す断面
図。FIG. 2 is a sectional view showing a state in which a spiral wound gasket of the present invention is interposed between flat face type flange portions.
【図3】 従来のうず巻形ガスケットの使用状態を示す
断面図。FIG. 3 is a cross-sectional view showing a usage state of a conventional spiral wound gasket.
4…ガスケット本体 5…外輪 7,8…フランジ部 9…絶縁軟質部材 4: Gasket body 5: Outer ring 7, 8: Flange 9: Soft insulating member
フロントページの続き (56)参考文献 特開 平8−210569(JP,A) 実公 平4−32553(JP,Y2) (58)調査した分野(Int.Cl.6,DB名) F16L 23/02 F16L 19/04 Continuation of the front page (56) References JP-A-8-210569 (JP, A) JP 4-32553 (JP, Y2) (58) Fields investigated (Int. Cl. 6 , DB name) F16L 23 / 02 F16L 19/04
Claims (2)
ール部材間に介設されて被シール部材間をシールするう
ず巻形ガスケットであって、 上記外輪の両側面に、該外輪と被シール部材の対向面と
の間の隙間を埋める絶縁軟質部材が配設されたうず巻形
ガスケット。1. A has a outer ring on the outer periphery of the gasket body, a spiral wound gasket for sealing between the sealing member is interposed between the sealing member, on both sides of the outer ring, the and the outer ring spiral wound gaskets insulation soft member Ru fills a gap is disposed between the facing surfaces of the sealing member.
多孔質PTFE、ソリッドゴム、スポンジゴムもしくは
ゴムシーラントに設定された請求項1記載のうず巻形ガ
スケット。2. The soft insulating member is a PTFE solid body,
The spiral wound gasket according to claim 1, wherein the spiral wound gasket is set to porous PTFE, solid rubber, sponge rubber or rubber sealant.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8173091A JP2945872B2 (en) | 1996-06-11 | 1996-06-11 | Spiral wound gasket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8173091A JP2945872B2 (en) | 1996-06-11 | 1996-06-11 | Spiral wound gasket |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09329278A JPH09329278A (en) | 1997-12-22 |
JP2945872B2 true JP2945872B2 (en) | 1999-09-06 |
Family
ID=15954036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8173091A Expired - Lifetime JP2945872B2 (en) | 1996-06-11 | 1996-06-11 | Spiral wound gasket |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2945872B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5123555B2 (en) * | 2007-04-20 | 2013-01-23 | 株式会社水道技術開発機構 | Corrosion prevention structure for fluid piping and corrosion prevention method for fluid piping |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6422999U (en) * | 1987-07-31 | 1989-02-07 |
-
1996
- 1996-06-11 JP JP8173091A patent/JP2945872B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH09329278A (en) | 1997-12-22 |
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