JPH0257764A - Gasket - Google Patents
GasketInfo
- Publication number
- JPH0257764A JPH0257764A JP20496188A JP20496188A JPH0257764A JP H0257764 A JPH0257764 A JP H0257764A JP 20496188 A JP20496188 A JP 20496188A JP 20496188 A JP20496188 A JP 20496188A JP H0257764 A JPH0257764 A JP H0257764A
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- expanded graphite
- joint
- graphite
- handling
- 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.)
- Granted
Links
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 37
- 239000010439 graphite Substances 0.000 claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 229920002050 silicone resin Polymers 0.000 claims description 14
- 238000007789 sealing Methods 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 12
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 239000011888 foil Substances 0.000 abstract description 9
- 150000001875 compounds Chemical class 0.000 abstract description 7
- 230000006870 function Effects 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009993 protective function Effects 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 3
- 229910052710 silicon Inorganic materials 0.000 abstract 3
- 239000010703 silicon Substances 0.000 abstract 3
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000002687 intercalation Effects 0.000 description 6
- 238000009830 intercalation Methods 0.000 description 6
- 230000002411 adverse Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 102000011782 Keratins Human genes 0.000 description 1
- 108010076876 Keratins Proteins 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はガスケットに係り、特に封止特性を低下させる
ことなく防食性および取扱い性を向上させたガスケット
に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a gasket, and particularly to a gasket that has improved anticorrosion properties and ease of handling without reducing sealing properties.
（従来の技術）
膨張黒鉛は、封止性、耐熱性、耐薬品性（耐食性）およ
び耐久性等にすぐれた特性を有しているため１例えばフ
ランジ管継手における継手面の流体漏れを防ぐガスケッ
トとして多用されている。(Prior art) Expanded graphite has excellent properties such as sealing performance, heat resistance, chemical resistance (corrosion resistance), and durability.1 For example, it is used as a gasket to prevent fluid leakage from the joint surface of flange pipe joints. It is often used as.
（発明が解決しようとする課題）
ところで、膨張黒鉛は、一般に、天然黒鉛などを濃硫酸
と、強酸化材の混合液で処理して黒鉛層間化合物を形成
させ、これを急激に加熱０発泡ささせて黒鉛粒子を高度
に膨張させることによって得られる。そして、この膨張
黒鉛をロール或いは型押しによってシート状に加工した
。所謂、膨張黒鉛シートを用いてガスケットを成形して
いる。(Problems to be Solved by the Invention) Expanded graphite is generally produced by treating natural graphite or the like with a mixture of concentrated sulfuric acid and a strong oxidizing agent to form a graphite intercalation compound, which is then rapidly heated to cause zero foaming. It is obtained by highly expanding graphite particles. Then, this expanded graphite was processed into a sheet shape by rolling or embossing. The gasket is formed using a so-called expanded graphite sheet.
膨張黒鉛によって成形されたガスケットは、前述のよう
に、封止性、耐熱性、耐薬品性（耐食性）および耐久性
等にすぐれた特性を有しているため、管継手における継
手面の流体漏れを防ぐ密封部材として好適に使用できる
利点を有しているものの、黒鉛層間化合物（酸性化合物
）が若干残存しているから、これを管継手に用いた場合
、前記化合物によって継手面、つまりガスケットを挟着
するフランジ面を腐食させ、経時的に封止特性を低下さ
せる欠点がある。As mentioned above, gaskets made of expanded graphite have excellent properties such as sealing performance, heat resistance, chemical resistance (corrosion resistance), and durability. Although it has the advantage that it can be used suitably as a sealing member to prevent It has the disadvantage that it corrodes the flange surface to be clamped and deteriorates the sealing properties over time.
また、ｍ張黒鉛シートは、単なる膨張黒鉛粒子の絡み合
いによって形成されているものであるから、靭性が低く
軟質で脆いため強度的に若干の問題を有している。その
ために取扱い時において折損および取疵等が発生し易い
、しかも粘着力が高いために継手面に固着し易く、した
がって保守点検等に際して継手を分解してもガスケット
の除去が困難であり、形態を損ないやすく、再使用する
ことができない等の欠点を有している。Furthermore, since the m-tensile graphite sheet is formed by simply entangling expanded graphite particles, it has low toughness, is soft, and brittle, and therefore has some problems in terms of strength. Therefore, breakage and scratches are likely to occur during handling, and the high adhesive strength makes it easy to stick to the joint surface, making it difficult to remove the gasket even if the joint is disassembled for maintenance and inspection. It has drawbacks such as being easily damaged and cannot be reused.
本発明はこのような８１情に鑑みなされたもので、特に
封止特性を低下させることなく相手側継手面（フランジ
面）に対する防食性を高め、折損や取疵の発生および継
手面に対する固着を防止して取扱い性を向上させること
ができるガスケットを提供することを目的とする。The present invention was developed in view of the above circumstances, and improves the corrosion resistance against the mating joint surface (flange surface) without particularly deteriorating the sealing properties, and prevents breakage, damage, and adhesion to the joint surface. The purpose of the present invention is to provide a gasket that can prevent this and improve handling properties.
（問題点を解決するため・の手段）
前記目的を達成するために本発明は、膨張黒鉛ガスケッ
ト基体の表面にシリコ、ン被膜を形成したものである。(Means for Solving the Problems) In order to achieve the above object, the present invention forms a silicone coating on the surface of an expanded graphite gasket base.
（作用）
本発明によれば、膨張黒鉛が元来保有している性質によ
って、すぐれた封止特性が得られる。しかも、表面に形
成したシリコン樹脂系被膜によって、膨張黒鉛ガスケッ
ト基体中の黒鉛層間化合物が金属製の継手面に及ぼす悪
影響を回避して、継手面の腐食を防止する。(Function) According to the present invention, excellent sealing properties can be obtained due to the properties originally possessed by expanded graphite. Moreover, the silicone resin coating formed on the surface avoids the adverse effects of the graphite intercalation compound in the expanded graphite gasket base on the metal joint surface, thereby preventing corrosion of the joint surface.
また、シリコン樹脂系被膜の補強機能および表面保護機
能によって、取扱い時の折損や服疵の発生が防止される
とともに、継手面に対する固着を避けることができる。Furthermore, the reinforcing function and surface protection function of the silicone resin coating prevents breakage and scratches during handling, and also prevents sticking to the joint surface.
（実施例） 以下、本発明の実施例を図面に基いて説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例である丸形環状ガスケットの
正面図、第２図は第１図における４１−ｎ線に沿う拡大
断面図であり、これらの図において、ガスケットｌは厚
さ方向中央部に金属箔２を配置し、この金属箔２の上面
に接着材３Ａを介して膨張黒鉛ガスケット基体４Ａを接
着し、該膨張黒鉛ガスケット基体４Ａの表面（上面）に
シリコン樹脂系被１ｌｉｉＩ５を形成するとともに、前
記金属箔２の下面に接着材３Ｂを介して膨張黒鉛ガスケ
ット基体４Ｂを接着し、該膨張黒鉛ガスケット基体４Ｂ
の表面（下面）にシリコン樹脂系被膜５を形成した構成
になっている。Fig. 1 is a front view of a round annular gasket according to an embodiment of the present invention, and Fig. 2 is an enlarged sectional view taken along line 41-n in Fig. 1. In these figures, the gasket l is the thickness. A metal foil 2 is arranged at the center in the direction, an expanded graphite gasket base 4A is adhered to the upper surface of the metal foil 2 via an adhesive 3A, and a silicone resin coating 1liiI5 is applied to the surface (upper surface) of the expanded graphite gasket base 4A. At the same time, an expanded graphite gasket base 4B is bonded to the lower surface of the metal foil 2 via an adhesive 3B, and the expanded graphite gasket base 4B is
It has a structure in which a silicone resin coating 5 is formed on the surface (lower surface).
金属箔２は厚さ５０ＩＬｍのステンレス（例えば５ＵＳ
３１Ｂ）を環状に剪断したものが好ましく、接着材３Ａ
、３Ｂとしては、例えば熱硬化性のフェノール樹脂系の
ものが好ましい、そして厚さ７７ｚｍで塗布している。The metal foil 2 is made of stainless steel (for example, 5US) with a thickness of 50ILm.
Adhesive material 3A) is preferably obtained by shearing 31B) into an annular shape.
, 3B is preferably made of, for example, a thermosetting phenolic resin, and is coated to a thickness of 77 zm.
Ｗ張黒鉛ガスケット基体４Ａ、４Ｂは厚さ１１■、密度
０．９〜１．１ｇ／ｃｍ３の膨張黒鉛シートを環状に剪
断したものを用いている。The W-strung graphite gasket substrates 4A and 4B are made by shearing an expanded graphite sheet having a thickness of 11 cm and a density of 0.9 to 1.1 g/cm3 into annular shapes.
また、シリコン樹脂系被膜５は、シリコン樹脂系ワニス
（例えば信越化学（株）製のＫＲ−２５１）を用いてお
り、ガスケット基体４Ａ 、４Ｂの表面に厚さ５ｇｍ〜
２０ｇｍとなるように刷毛によって塗布したのち、室温
８０℃の乾燥室内で２〜１５分間乾燥することによって
形成している。The silicone resin coating 5 is made of silicone resin varnish (for example, KR-251 manufactured by Shin-Etsu Chemical Co., Ltd.), and is coated on the surfaces of the gasket bases 4A and 4B with a thickness of 5 g to 5 g.
It is formed by applying it with a brush to a thickness of 20 gm and then drying it for 2 to 15 minutes in a drying room at a room temperature of 80°C.
前記構成のガスケラ）１においては、金属箔２の補強効
果によって剛性が高められ、全体強度が増大する。その
ために特にガスケット１の折損を防止できるので取扱い
性が向上する。また、接着材３Ａ 、３Ｂとして熱硬化
性のフェノール系樹脂を用いているので、耐熱性は勿論
のこと、耐溶剤性にすぐれた特性を発揮して強力な結合
力を得ることができる。In the gas scaler (1) having the above structure, the stiffness is increased by the reinforcing effect of the metal foil 2, and the overall strength is increased. This particularly prevents the gasket 1 from breaking, which improves handling properties. Further, since thermosetting phenolic resin is used as the adhesives 3A and 3B, it exhibits excellent properties not only in heat resistance but also in solvent resistance and strong bonding strength can be obtained.
膨張黒鉛ガスケット基体４Ａ 、４Ｂによってガスケラ
）１が要求される高い封止特性を十分に確保できる。こ
れらガスケット基体４Ａ 、４Ｂには、周知のように、
濃硫酸と強醸化材との混合液で処理した場合に形成され
る黒鉛層間混合物が残存しているけれども、膨張黒鉛ガ
スケット基体４Ａ、４Ｂそれぞれの表面に形成したシリ
コン樹脂系被膜５によって、前記黒鉛層間化合物による
悪影響を確実に回避することができる。The expanded graphite gasket bases 4A and 4B can sufficiently ensure the high sealing properties required of the gas keratin (1). As is well known, these gasket bases 4A and 4B include:
Although the graphite interlayer mixture formed when treated with a mixed solution of concentrated sulfuric acid and a strong brewing agent remains, the silicone resin coating 5 formed on the surface of each of the expanded graphite gasket bases 4A and 4B prevents the above-mentioned Adverse effects caused by graphite intercalation compounds can be reliably avoided.
即ち、本実施例に係るガスケット１を、例えば周知のフ
ランジ管継手の流体漏れを防ぐ密封部材として使用した
場合、フランジ管継手における継手面、つまりガスケラ
）ｌを挟着する金属製の７ラング面には、シリコン樹脂
系被膜５が圧接することになり、黒鉛層間化合物がフラ
ンジ面に浸透しないので、黒鉛層間化合物によってフラ
ンジ面が腐食される不都合を防止できる。そのために、
経時的に封止特性が低下するようなことがない。That is, when the gasket 1 according to the present embodiment is used, for example, as a sealing member for preventing fluid leakage in a well-known flange pipe joint, the joint surface of the flange pipe joint, that is, the metal seven-rung surface that clamps the gasket 1. Since the silicone resin coating 5 is in pressure contact with the flange surface and the graphite intercalation compound does not penetrate into the flange surface, it is possible to prevent the flange surface from being corroded by the graphite intercalation compound. for that,
Sealing properties do not deteriorate over time.
シリコン樹脂系被膜５は膨張黒鉛ガスケット４Ａ、４Ｂ
よりも硬質かつ高強度であるから、前記金属箔２と同様
の補強機能を発揮して、ガスケットｌの折損を防止する
。また表面を被覆することによってもたらされる保護機
能により、服疵の発生を防止できる。したがって取扱い
性を向上させ品質を高めることができる。さらに、継手
面（フランジ面）に対する固着を避けることができるの
で、保守点検等に際して継手を分解してもガスケラ）ｌ
の形態を損なうことなく容易に取外すことができ、再使
用に供することができる。The silicone resin coating 5 is an expanded graphite gasket 4A, 4B.
Since it is harder and has higher strength than the metal foil 2, it exhibits the same reinforcing function as the metal foil 2 and prevents the gasket 1 from breaking. Furthermore, the protective function provided by coating the surface can prevent the occurrence of clothing flaws. Therefore, handling properties can be improved and quality can be improved. In addition, it is possible to avoid sticking to the joint surface (flange surface), so even if the joint is disassembled for maintenance inspection etc.
It can be easily removed without damaging its form and can be reused.
尚、前記実施例では、金属箔２の両面に接着材３Ａ 、
３Ａを介して１膨張黒鉛ガスケット基体４Ａ、４Ｂを配
置した構成で説明しているが、金属箔２を除去した構成
、つまり接着材３Ａによって互いに接着された複数層の
膨張黒鉛ガスケット基体４Ａ 、４Ｂの表面（上下面）
にシリコン樹脂系被ＩＩＩ ５を形成した構成、或いは
一層のガスケット基体４Ａの表面（上下面）にシリコン
樹脂系被膜５を形成した構成としても前記実施例と同様
の作用効果を奏するものである。In the above embodiment, adhesive 3A,
Although the explanation is based on a configuration in which one expanded graphite gasket base 4A and 4B are arranged through 3A, a configuration in which the metal foil 2 is removed, that is, a plurality of layers of expanded graphite gasket bases 4A and 4B bonded to each other with adhesive 3A is used. surface (top and bottom)
A configuration in which a silicone resin coating III 5 is formed on the gasket base 4A, or a configuration in which a silicone resin coating 5 is formed on the surface (upper and lower surfaces) of a single layer gasket base 4A can also provide the same effects as in the above embodiment.
（実験例）
■膨張黒鉛シート（ＵＣＣ社製ＧＴＢ 、厚さ０゜３８
ｉ＋ｍＸ縦５０ｍｍＸ横５０ｍｍ）ｃ７）表面（上下両
面）にシリコン系樹脂液１１５Ｉ（信越化学（株）製Ｋ
Ｒ−２５１）を刷毛によって塗布（検量１３．８ Ｘ
１０−’ｇ／ｃ膳２）シ、自然乾燥後２２時間かけて１
５０℃まで加熱乾燥する。(Experiment example) ■Expanded graphite sheet (GTB manufactured by UCC, thickness 0°38
i + m
R-251) with a brush (calibration 13.8
10-'g/c serving 2) Shi, 22 hours after natural drying 1
Heat and dry to 50°C.
■前記■で得たシートによって、外径４２ｍｍＸ内径２
５■のガスケットを製作する。■With the sheet obtained in the above ■, the outer diameter is 42 mm and the inner diameter is 2.
5. Make the gasket.
■ＳＯ３，４０３（焼入れ、焼戻し品）、表面粗さＲｍ
ａＸ１５（ルｍ）のフランジによって３０ＫＧｆ／ｃｍ
２の締付条件で前記■のガスケットを締付ける。■SO3,403 (quenched, tempered product), surface roughness Rm
30KGf/cm with aX15 (le m) flange
Tighten the gasket (①) above under the tightening conditions 2.
■蒸留水中に１０分間浸漬したのち、室温にて７２時間
放置する。■After immersing in distilled water for 10 minutes, leave it at room temperature for 72 hours.
前記■〜＠の条件に基いて腐食試験を行った結果、フラ
ンジ面に腐食が起らないすぐれた防食性と、フランジ面
への付着が起らない非固着性を、それぞれ併有している
ことが確認できた。As a result of a corrosion test conducted under the conditions of ■~@ above, it has both excellent corrosion resistance that does not cause corrosion on the flange surface, and non-stick properties that do not cause adhesion to the flange surface. This was confirmed.
（発明の効果）
以上説明したように、本発明によれば、膨張黒鉛ガスケ
ット基体の表面にシリコン樹脂系被膜を形成した構成と
しているので、膨張黒鉛が元来保有しているすぐれた封
止特性を低下させることなく、膨張黒鉛ガスケット基体
中の黒鉛層間化合物が、相手側継手面に及ぼす悪影響を
回避するための防食機能を発揮し、かつ補強機能および
保護機能によって取扱い時の折損や板疵の発生を防止し
て品質を高めることができるとともに、継手面に対する
固着を避けることができるので、取扱い性が大幅に向上
する等の効果を有する。(Effects of the Invention) As explained above, according to the present invention, since the silicone resin coating is formed on the surface of the expanded graphite gasket base, the expanded graphite has excellent sealing properties originally possessed. The graphite intercalation compound in the expanded graphite gasket base exhibits a corrosion-preventing function to avoid adverse effects on the mating joint surface, without reducing the corrosion resistance, and its reinforcing and protective functions prevent breakage and board scratches during handling. It is possible to prevent this from occurring and improve quality, and it is also possible to avoid sticking to the joint surface, which has the effect of greatly improving the ease of handling.
第１図は本発明の一実施例を示す正面図、第２図は第１
図におけるｊｌ −ＩＩ線に沿う拡大断面図である。
ｌ・・・ガスケット
４Ａ 、４Ｂ・・・ガスケット基体
箪 １ 閃
５・・・シリコン樹脂系被膜FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
It is an enlarged sectional view along the jl-II line in a figure. l...Gasket 4A, 4B...Gasket base plate 1 Flash 5...Silicone resin coating
Claims (1)
被膜を形成していることを特徴とするガスケット。(1) A gasket characterized in that a silicone resin coating is formed on the surface of an expanded graphite gasket base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63204961A JPH086809B2 (en) | 1988-08-18 | 1988-08-18 | gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63204961A JPH086809B2 (en) | 1988-08-18 | 1988-08-18 | gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0257764A true JPH0257764A (en) | 1990-02-27 |
| JPH086809B2 JPH086809B2 (en) | 1996-01-29 |
Family
ID=16499172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63204961A Expired - Lifetime JPH086809B2 (en) | 1988-08-18 | 1988-08-18 | gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086809B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0439906A2 (en) * | 1990-02-02 | 1991-08-07 | JMK International Inc. | Engine gasket with oil impermeable surface |
| JPH08319473A (en) * | 1995-05-26 | 1996-12-03 | Nippon Valqua Ind Ltd | Joint sheet |
| DE19804289A1 (en) * | 1998-02-04 | 1999-08-05 | Sgl Technik Gmbh | Laminate gasket with flare |
| US5992857A (en) * | 1993-08-31 | 1999-11-30 | Nippon Pillar Packing Co., Ltd. | Composite gasket |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102239888B1 (en) * | 2020-12-24 | 2021-04-12 | 이의정 | The metal gasket and manufacturing method having anti-corrosion layer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5986681A (en) * | 1982-10-01 | 1984-05-18 | テイ−アンドエヌ・マテリアルズ・リサ−チ・リミテツド | Manufacture of gasket |
| JPS6372971A (en) * | 1986-09-12 | 1988-04-02 | Nippon Reinz Co Ltd | Gasket |
-
1988
- 1988-08-18 JP JP63204961A patent/JPH086809B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5986681A (en) * | 1982-10-01 | 1984-05-18 | テイ−アンドエヌ・マテリアルズ・リサ−チ・リミテツド | Manufacture of gasket |
| JPS6372971A (en) * | 1986-09-12 | 1988-04-02 | Nippon Reinz Co Ltd | Gasket |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0439906A2 (en) * | 1990-02-02 | 1991-08-07 | JMK International Inc. | Engine gasket with oil impermeable surface |
| US5992857A (en) * | 1993-08-31 | 1999-11-30 | Nippon Pillar Packing Co., Ltd. | Composite gasket |
| JPH08319473A (en) * | 1995-05-26 | 1996-12-03 | Nippon Valqua Ind Ltd | Joint sheet |
| DE19804289A1 (en) * | 1998-02-04 | 1999-08-05 | Sgl Technik Gmbh | Laminate gasket with flare |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH086809B2 (en) | 1996-01-29 |
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