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-400 Series -1/4" CS




Image Model+ Item Name Stock Price Quantity Discounts
425 Teflon Encapsulated Silicone O-Rings TES425

425 Teflon Encapsulated Silicone O-Rings

4-1/2"ID X 5"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$10.49

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426 Teflon Encapsulated Silicone O-Rings TES426

426 Teflon Encapsulated Silicone O-Rings

4-5/8"ID X 5-1/8"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$10.91

Add:

427 Teflon Encapsulated Silicone O-Rings TES427

427 Teflon Encapsulated Silicone O-Rings

4-3/4"ID X 5-1/4"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$10.91

Add:

428 Teflon Encapsulated Silicone O-Rings TES428

428 Teflon Encapsulated Silicone O-Rings

4-7/8"ID X 5-3/8"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$10.91

Add:

429 Teflon Encapsulated Silicone O-Rings TES429

429 Teflon Encapsulated Silicone O-Rings

5"ID X 5-1/2"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$10.91

Add:

430 Teflon Encapsulated Silicone O-Rings TES430

430 Teflon Encapsulated Silicone O-Rings

5-1/8"ID X 5-5/8"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.38

Add:

431 Teflon Encapsulated Silicone O-Rings TES431

431 Teflon Encapsulated Silicone O-Rings

5-1/4"ID X 5-3/4"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.38

Add:

432 Teflon Encapsulated Silicone O-Rings TES432

432 Teflon Encapsulated Silicone O-Rings

5-3/8"ID X 5-7/8"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.38

Add:

433 Teflon Encapsulated Silicone O-Rings TES433

433 Teflon Encapsulated Silicone O-Rings

5-1/2"ID X 6"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.38

Add:

434 Teflon Encapsulated Silicone O-Rings TES434

434 Teflon Encapsulated Silicone O-Rings

5-5/8"ID X 6-1/8"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.87

Add:

435 Teflon Encapsulated Silicone O-Rings TES435

435 Teflon Encapsulated Silicone O-Rings

5-3/4"ID X 6-1/4"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.87

Add:

436 Teflon Encapsulated Silicone O-Rings TES436

436 Teflon Encapsulated Silicone O-Rings

5-7/8"ID X 6-3/8"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.87

Add:

437 Teflon Encapsulated Silicone O-Rings TES437

437 Teflon Encapsulated Silicone O-Rings

6"ID X 6-1/2"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$11.87

Add:

438 Teflon Encapsulated Silicone O-Rings TES438

438 Teflon Encapsulated Silicone O-Rings

6-1/4"ID X 6-3/4"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
4
$12.36

Add:

439 Teflon Encapsulated Silicone O-Rings TES439

439 Teflon Encapsulated Silicone O-Rings

6-1/2"ID X 7"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
4
$12.36

Add:

440 Teflon Encapsulated Silicone O-Rings TES440

440 Teflon Encapsulated Silicone O-Rings

6-3/4"ID X 7-1/4"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$12.87

Add:

441 Teflon Encapsulated Silicone O-Rings TES441

441 Teflon Encapsulated Silicone O-Rings

7"ID X 7-1/2"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$12.87

Add:

442 Teflon Encapsulated Silicone O-Rings TES442

442 Teflon Encapsulated Silicone O-Rings

7-1/4"ID X 7-3/4"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$13.40

Add:

443 Teflon Encapsulated Silicone O-Rings TES443

443 Teflon Encapsulated Silicone O-Rings

7-1/2"ID X 8"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$13.40

Add:

444 Teflon Encapsulated Silicone O-Rings TES444

444 Teflon Encapsulated Silicone O-Rings

7-3/4"ID X 8-1/4"OD X 1/4"CS Teflon® Encapsulated Silicone O-Rings A Teflon Encapsulated o-ring is a circular shaped seal with a...
0
$13.96

Add:



What are the most common O-ring compounds?

We stock O-Rings in over 20 different compounds and durometers the following six are the standard rubber materials in a range of durometers (Shore A) hardness to satisfy practically any service condition:

Buna-N O-Rings / Nitrile O-Rings / NBR: Nitrile (Buna-N) is the most widely used elastomer due to its excellent resistance to petroleum products, operating temperature range (-40°F to +257°F) and one of the best performance-to-cost values. It's an ideal material for aerospace, automotive, propane and natural gas applications. Special Hydrogenated Nitrile (HNBR) compounds can improve resistance to direct ozone, sunlight, and weather exposure while increasing temperature range to +300°F.
AS-568 Buna-N O-Rings | Metric Buna-N O-Rings

Viton® O-Rings / FKM: Fluorocarbon (Viton®) exhibits exceptional resistance to chemicals, oils, temperature extremes (-13°F to +446°F), low compression set, low gas permeability and excellent aging characteristics. Applications include: aircraft engines, automotive fuel handling systems, and chemical processing industries. FKM is also suitable for high vacuum applications. It is not recommended for exposure to ketones, alkalis, and Skydrol® fluids. Custom compounds are available with improved chemical and low temperature resistance.
AS-568 Viton® O-Rings | Metric Viton® O-Rings

Ethylene-Propylene / EPDM O-Rings: EPDM has outstanding resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments. This popular rubber compound is usually the first choice for low torque drive belt applications.
AS-568 EPDM O-Rings | Metric EPDM O-Rings

Silicone O-Rings / VMQ: In the Silicone family, you will find compounds which are superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are very clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F.
AS-568 Silicone O-Rings | Metric Silicone O-Rings

Neoprene® O-Rings / CR: Neoprene (-40º to +250ºF) is reasonably priced and features good resistance to petroleum oils, ozone, sunlight and oxygen aging, relatively low compression set, good resilience and outstanding physical toughness. It is the preferred sealing material for the refrigeration industry because of its resistance to ammonia and Freon®.
AS-568 Neoprene® O-Rings