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-400 Series - 0.275 - 1/4" CS




Image Model+ Item Name Stock Price Quantity Discounts
-425 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75425

-425 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

4-1/2 ID X 5 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$18.36

Add:

Quantity Discounts
1-18$18.36
19-108$13.77
109+$9.18
-426 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75426

-426 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

4-5/8 ID X 5-1/8 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$18.36

Add:

Quantity Discounts
1-18$18.36
19-108$13.77
109+$9.18
-427 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75427

-427 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

4-3/4 ID X 5-1/4 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$18.36

Add:

Quantity Discounts
1-18$18.36
19-108$13.77
109+$9.18
-428 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75428

-428 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

4-7/8 ID X 5-3/8 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$18.36

Add:

Quantity Discounts
1-18$18.36
19-108$13.77
109+$9.18
-429 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75429

-429 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5 ID X 5-1/2 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$18.36

Add:

Quantity Discounts
1-18$18.36
19-108$13.77
109+$9.18
-430 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75430

-430 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5-1/8 ID X 5-5/8 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$18.36

Add:

Quantity Discounts
1-18$18.36
19-108$13.77
109+$9.18
-431 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75431

-431 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5-1/4 ID X 5-3/4 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$19.99

Add:

Quantity Discounts
1-16$19.99
17-100$14.99
101+$10.00
-432 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75432

-432 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5-3/8 ID X 5-7/8 OD X 1/4 W Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$19.99

Add:

Quantity Discounts
1-16$19.99
17-100$14.99
101+$10.00
-433 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75433

-433 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5-1/2 ID X 6 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$19.99

Add:

Quantity Discounts
1-16$19.99
17-100$14.99
101+$10.00
-434 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75434

-434 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5-5/8 ID X 6-1/8 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$21.45

Add:

Quantity Discounts
1-15$21.45
16-93$16.09
94+$10.73
-435 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75435

-435 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5-3/4 ID X 6-1/4 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$21.45

Add:

Quantity Discounts
1-15$21.45
16-93$16.09
94+$10.73
-436 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75436

-436 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

5-7/8 ID X 6-3/8 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$22.99

Add:

Quantity Discounts
1-14$22.99
15-86$17.24
87+$11.50
-437 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75437

-437 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

6 ID X 6-1/2 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$22.99

Add:

Quantity Discounts
1-14$22.99
15-86$17.24
87+$11.50
-438 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75438

-438 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

6-1/4 ID X 6-3/4 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$24.54

Add:

Quantity Discounts
1-13$24.54
14-81$18.41
82+$12.27
-439 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75439

-439 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

6-1/2 ID X 7 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$26.08

Add:

Quantity Discounts
1-12$26.08
13-76$19.56
77+$13.04
-440 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75440

-440 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

6-3/4 ID X 7-1/4 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$26.08

Add:

Quantity Discounts
1-12$26.08
13-76$19.56
77+$13.04
-441 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75441

-441 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

7 ID X 7-1/2 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$27.54

Add:

Quantity Discounts
1-12$27.54
13-72$20.66
73+$13.77
-442 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75442

-442 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

7-1/4 ID X 7-3/4 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$27.54

Add:

Quantity Discounts
1-12$27.54
13-72$20.66
73+$13.77
-443 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75443

-443 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

7-1/2 ID X 8 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$29.09

Add:

Quantity Discounts
1-11$29.09
12-68$21.82
69+$14.55
-444 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black A75444

-444 Aflas (TFE/P, FEPM) 80 Duro O-Ring Black

7-3/4 ID X 8-1/4 OD X 1/4 CS Aflas (Tetrafluoroethylene Propylene, FEPM) AFLAS ® is the tradename for a unique fluoroelastomer based upon an...
0
$29.09

Add:

Quantity Discounts
1-11$29.09
12-68$21.82
69+$14.55


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