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-400 Series - 0.275 - 1/4" CS




Image Model+ Item Name Stock Price Quantity Discounts
AS3209-425 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75425-MS

AS3209-425 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

4 1/2"ID X 5"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$8.32

Add:
Min:  31
Quantity Discounts
31-160$8.32
161-600$6.24
601+$4.16
AS3209-426 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75426-MS

AS3209-426 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

 4 5/8"ID X 5 1/8"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly...
0
$8.49

Add:
Min:  30
Quantity Discounts
30-156$8.49
157-588$6.37
589+$4.25
AS3209-427 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75427-MS

AS3209-427 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

4 3/4"ID X 5 1/4"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$8.48

Add:
Min:  30
Quantity Discounts
30-157$8.48
158-589$6.36
590+$4.24
AS3209-428 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75428-MS

AS3209-428 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

4-7/8"ID X 5 3/8"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$9.51

Add:
Min:  27
Quantity Discounts
27-140$9.51
141-525$7.13
526+$4.76
AS3209-429 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75429-MS

AS3209-429 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5"ID X 5 1/2"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$8.94

Add:
Min:  28
Quantity Discounts
28-149$8.94
150-559$6.71
560+$4.47
AS3209-430 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75430-MS

AS3209-430 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5 1/8"ID X 5 5/8"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$20.45

Add:
Min:  13
Quantity Discounts
13-65$20.45
66-244$15.34
245+$10.23
AS3209-431 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75431-MS

AS3209-431 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5-1/4"ID X 5 3/4"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$10.01

Add:
Min:  25
Quantity Discounts
25-133$10.01
134-499$7.51
500+$5.01
AS3209-432 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75432-MS

AS3209-432 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5 3/8"ID X 5 7/8"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$9.72

Add:
Min:  26
Quantity Discounts
26-137$9.72
138-514$7.29
515+$4.86
AS3209-433 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75433-MS

AS3209-433 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5 1/2"ID X 6"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
48
$11.09

Add:
Min:  23
Quantity Discounts
23-120$11.09
121-451$8.32
452+$5.55
AS3209-434 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75434-MS

AS3209-434 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5 5/8"ID X 6 1/8"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$9.67

Add:
Min:  26
Quantity Discounts
26-137$9.67
138-516$7.25
517+$4.84
AS3209-435 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75435-MS

AS3209-435 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5 3/4"ID X 6 1/4"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$9.58

Add:
Min:  27
Quantity Discounts
27-139$9.58
140-521$7.19
522+$4.79
AS3209-436 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75436-MS

AS3209-436 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

5-7/8"ID X 6 3/8"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$10.04

Add:
Min:  25
Quantity Discounts
25-132$10.04
133-498$7.53
499+$5.02
AS3209-437 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75437-MS

AS3209-437 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

6"ID X 6 1/2"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$10.22

Add:
Min:  25
Quantity Discounts
25-130$10.22
131-489$7.67
490+$5.11
AS3209-438 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75438-MS

AS3209-438 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

6-1/4"ID X 6 3/4"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$10.63

Add:
Min:  24
Quantity Discounts
24-125$10.63
126-469$7.97
470+$5.32
AS3209-439 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75439-MS

AS3209-439 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

6-1/2"ID X 7"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$10.99

Add:
Min:  23
Quantity Discounts
23-121$10.99
122-454$8.24
455+$5.50
AS3209-440 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75440-MS

AS3209-440 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

6-3/4"ID X 7 1/4"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$12.76

Add:
Min:  20
Quantity Discounts
20-104$12.76
105-391$9.57
392+$6.38
AS3209-441 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75441-MS

AS3209-441 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

7"ID X 7 1/2"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$12.59

Add:
Min:  20
Quantity Discounts
20-105$12.59
106-396$9.44
397+$6.30
AS3209-442 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75442-MS

AS3209-442 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

7 1/4"ID X 7 3/4"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$13.24

Add:
Min:  19
Quantity Discounts
19-100$13.24
101-377$9.93
378+$6.62
AS3209-443 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75443-MS

AS3209-443 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

7-1/2"ID X 8"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$13.15

Add:
Min:  20
Quantity Discounts
20-101$13.15
102-379$9.86
380+$6.58
AS3209-444 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring V75444-MS

AS3209-444 (AMS7276) V75 FKM Fluorocarbon Mil-Spec O-Ring

7-3/4"ID X 8 1/4"OD X 1/4"CS Description: Viton® Fluorocarbon FKM Mil Spec O-rings AMS 7276 (AS3208, AS3209), Formerly AMS7278,...
0
$13.72

Add:
Min:  19
Quantity Discounts
19-97$13.72
98-364$10.29
365+$6.86


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