Seals and Gaskets

Gaskets are typically used for sealing piping lines or terminal connection on a tank or a process vessel. Typically rubber-based gaskets can be reused multiple times, while metal gaskets should be replaced at every disassembly.

Duniway Stockroom Corporation

CF Copper Gaskets

Copper CF gasket for ultra high vacuum applications. The gasket is sandwiched between the knife edge of a conflat flange and the process wall. Sealing is created with metal only parts, therefore eliminating any outgassing from elastomer-type seals.

MaterialNominal Pipe SizeMfg. P/N.Encole P/N.Price
Copper1-1/3" (DN16)Not Available100N03$32.10per package of 10
Copper2-1/8" (DN25)Not Available100N04$43.40per package of 10
Copper2-3/4" (DN40)Not Available100N06$64.00per package of 10
Copper3-3/8" (DN50)Not Available100N07$34.80per package of 5
Copper4-1/2" (DN63)G-450100N08$74.50per package of 10
Copper4-5/8" (DN80)Not Available100N09$86.80per package of 10
Copper6" (DN100)Not Available100N10$97.20per package of 10
Copper6-3/4" (DN125)Not Available100N11$105.00per package of 10
Copper8" (DN160)Not Available100N12$118.00per package of 10
Copper10" (DN200)Not Available100N13$124.20per package of 10
Duniway Stockroom Corporation

Silver-Plated Copper Conflat CF Gaskets

Copper CF gasket for ultra high vacuum applications. Silver plating prevents oxidation of copper at high temperatures. The gasket is designed to be plastically deformed between the knife edge of a conflat flange and the process wall. Sealing is created with metal only parts, therefore eliminating any outgassing from elastomer-type seals.

MaterialNominal Pipe SizeMfg. P/N.Encole P/N.Price
Sliver-Plated Copper1-1/3" (DN16)Not Available901N03$32.50per package of 10
Sliver-Plated Copper2-1/8" (DN25)Not Available901N04$42.90per package of 10
Sliver-Plated Copper2-3/4" (DN40)Not Available901N06$53.80per package of 10
Sliver-Plated Copper3-3/8" (DN50)Not Available901N07$55.90per package of 10
Sliver-Plated Copper4-1/2" (DN63)Not Available901N08$82.30per package of 10
Sliver-Plated Copper4-5/8" (DN80)Not Available901N09$97.50per package of 10
Sliver-Plated Copper6" (DN100)Not Available901N10$109.30per package of 10
Sliver-Plated Copper6-3/4" (DN125)Not Available901N11$143.00per package of 10
Sliver-Plated Copper8" (DN160)Not Available901N12$152.10per package of 10
Sliver-Plated Copper10" (DN200)Not Available901N13$208.00per package of 10
Phelps Industrial Products, Inc.

Full Face Gaskets to ASME B16.20, with Buna-N Binder Material

Full face ASME B16.20 gaskets made from compressed non-asbestos sheet constructed with fibers providing chemical stability and heat resistance. The Buna-Nitrile binder offers good resistance to various oils, petroleum derivatives, low pressure steam, gases, etc. Resistance to high temperature creep with torque retention provides its sealing properties. This material is particularly good in steam applications. Suitable for potable water. The gasket is green in color and has a smooth finish.

Nominal Pipe SizeMaterialMax Operating Temp.Mfg. P/N.Encole P/N.Price
1-1/2"Buna-N275 FNot Available402S13$3.97each
1-1/2"Buna-N275 FNot Available300S13$4.29each
2"Buna-N275 FNot Available402S14$4.11each
2-1/2"Buna-N275 FNot Available402S15$5.98each
3"Buna-N275 FNot Available402S16$6.24each
4"Buna-N275 FNot Available402S18$7.20each
6"Buna-N275 FNot Available402S21$11.84each
8"Buna-N275 FNot Available402S23$14.62each
2"Buna-N275 FNot Available300S14$4.44each
2-1/2"Buna-N275 FNot Available300S15$6.46each
3"Buna-N275 FNot Available300S16$6.74each
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Phelps Industrial Products, Inc.

Full Face Gaskets to ASME B16.20, NOVATEC 925F Engineered Graphite

Full face ASME B16.20 gaskets made from NOVATEC 925F, which is a universal high pressure compressed non-asbestos gasket material containing 75% pure graphite. This is an excellent chemical sheet that works best in flanges, pump casings, heat exchangers, lids, vessels, valve bodies and sight glasses. It can replace flexible graphite in many applications. This gasket is easily identified by its grape colored "easy release" non-stick coating.

Nominal Pipe SizeMaterialMax Operating Temp.Mfg. P/N.Encole P/N.Price
1-1/2"Graphite840 FNot Available403S13$8.12each
1-1/2"Graphite840 FNot Available301S13$8.77each
2"Graphite840 FNot Available403S14$10.54each
2-1/2"Graphite840 FNot Available403S15$14.60each
3"Graphite840 FNot Available403S16$15.42each
4"Graphite840 FNot Available403S18$18.69each
6"Graphite840 FNot Available403S21$34.52each
8"Graphite840 FNot Available403S23$37.92each
2"Graphite840 FNot Available301S14$11.38each
2-1/2"Graphite840 FNot Available301S15$15.77each
3"Graphite840 FNot Available301S16$16.65each
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