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.

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.

Material Nominal Pipe Size Mfg. P/N. Encole P/N. Price
Copper 1-1/3" (DN16) Not Available 100N03 $32.10 per package of 10
Copper 2-1/8" (DN25) Not Available 100N04 $43.40 per package of 10
Copper 2-3/4" (DN40) Not Available 100N06 $64.00 per package of 10
Copper 3-3/8" (DN50) Not Available 100N07 $34.80 per package of 5
Copper 4-1/2" (DN63) G-450 100N08 $74.50 per package of 10
Copper 4-5/8" (DN80) Not Available 100N09 $86.80 per package of 10
Copper 6" (DN100) Not Available 100N10 $97.20 per package of 10
Copper 6-3/4" (DN125) Not Available 100N11 $105.00 per package of 10
Copper 8" (DN160) Not Available 100N12 $118.00 per package of 10
Copper 10" (DN200) Not Available 100N13 $124.20 per package of 10
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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.

Material Nominal Pipe Size Mfg. P/N. Encole P/N. Price
Sliver-Plated Copper 1-1/3" (DN16) Not Available 901N03 $32.50 per package of 10
Sliver-Plated Copper 2-1/8" (DN25) Not Available 901N04 $42.90 per package of 10
Sliver-Plated Copper 2-3/4" (DN40) Not Available 901N06 $53.80 per package of 10
Sliver-Plated Copper 3-3/8" (DN50) Not Available 901N07 $55.90 per package of 10
Sliver-Plated Copper 4-1/2" (DN63) Not Available 901N08 $82.30 per package of 10
Sliver-Plated Copper 4-5/8" (DN80) Not Available 901N09 $97.50 per package of 10
Sliver-Plated Copper 6" (DN100) Not Available 901N10 $109.30 per package of 10
Sliver-Plated Copper 6-3/4" (DN125) Not Available 901N11 $143.00 per package of 10
Sliver-Plated Copper 8" (DN160) Not Available 901N12 $152.10 per package of 10
Sliver-Plated Copper 10" (DN200) Not Available 901N13 $208.00 per package of 10
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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 Size Material Max Operating Temp. Mfg. P/N. Encole P/N. Price
1-1/2" Buna-N 275 F Not Available 402S13 $3.97 each
1-1/2" Buna-N 275 F Not Available 300S13 $4.29 each
2" Buna-N 275 F Not Available 402S14 $4.11 each
2-1/2" Buna-N 275 F Not Available 402S15 $5.98 each
3" Buna-N 275 F Not Available 402S16 $6.24 each
4" Buna-N 275 F Not Available 402S18 $7.20 each
6" Buna-N 275 F Not Available 402S21 $11.84 each
8" Buna-N 275 F Not Available 402S23 $14.62 each
2" Buna-N 275 F Not Available 300S14 $4.44 each
2-1/2" Buna-N 275 F Not Available 300S15 $6.46 each
3" Buna-N 275 F Not Available 300S16 $6.74 each
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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 Size Material Max Operating Temp. Mfg. P/N. Encole P/N. Price
1-1/2" Graphite 840 F Not Available 403S13 $8.12 each
1-1/2" Graphite 840 F Not Available 301S13 $8.77 each
2" Graphite 840 F Not Available 403S14 $10.54 each
2-1/2" Graphite 840 F Not Available 403S15 $14.60 each
3" Graphite 840 F Not Available 403S16 $15.42 each
4" Graphite 840 F Not Available 403S18 $18.69 each
6" Graphite 840 F Not Available 403S21 $34.52 each
8" Graphite 840 F Not Available 403S23 $37.92 each
2" Graphite 840 F Not Available 301S14 $11.38 each
2-1/2" Graphite 840 F Not Available 301S15 $15.77 each
3" Graphite 840 F Not Available 301S16 $16.65 each
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