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Quad Buna-N 70 Cord

Quad-Ring® X-Ring Cord Buna-N 70 Cord

The four-lobed design with a specially developed sealing profile of these seals provides twice the sealing surface of ordinary O-rings. The four-lobed design not only provides lower fiction than an O-ring, but also, due to its square cross section, it resists spiral twist. Quad Rings are available in a wide range of elastomer materials for both standard and special applications. Their dimensions are specified with the inside diameter "d1" and the cross-section "W." Quad Rings are supplied to the American Standard AS-568A and are completely interchangeable with O-rings in these sizes. They can be used in a variety of static and dynamic sealing applications including rotary, reciprocating or oscillating motion.

Features:

  • There are two sealing surfaces to give a positive seal with less friction. Due to an improved pressure profile over Quad-Ring© Seal cross-section, a high sealing effect is achieved.
  • The recessed mold parting line provides no flash or parting line on the surface of the seal and ensures "zero leakage." What's more, a lubricant reservoir formed between the sealing lips improves performance at start-up.
  • The quad cross-section resists spiral twisting and extrusion. Due to its special profile, the seal does not tend to twist in the groove during reciprocating movement
  • Twice the sealing surface means less radial squeeze is needed to create an effective seal resulting in less friction, less wear and longer service life.

Size not listed, special requirements or large quantities please click this link to Request a Price Quote.




Image Model+ Item Name Stock Price Quantity Discounts
.070" (1.78mm) Buna-N 70 O-Ring Cord Quad X-Ring QN70.070

.070" (1.78mm) Buna-N 70 O-Ring Cord Quad X-Ring

.070" (1.78mm) C/S Nitrile (Buna-N) 70 Durometer QUAD (X-Ring) Cord Stock Cord stock to make your own O-rings and gaskets Please note: Priced...
171
$0.23

Add:
Min:  3
Quantity Discounts
3-147$0.23
148-833$0.17
834+$0.12
.103" (2.62mm) Buna-N 70 O-Ring Cord Quad X-Ring QN70.103

.103" (2.62mm) Buna-N 70 O-Ring Cord Quad X-Ring

.103" (2.62mm) C/S Nitrile (Buna-N) 70 Durometer QUAD (X-Ring) Cord Stock Cord stock to make your own O-rings and gaskets Please note: Priced...
128
$0.50

Add:

Quantity Discounts
1-65$0.50
66-399$0.38
400+$0.25
.139" (3.53mm) Buna-N 70 O-Ring Cord Quad X-Ring QN70.139

.139" (3.53mm) Buna-N 70 O-Ring Cord Quad X-Ring

.139" (3.53mm) C/S Nitrile (Buna-N) 70 Durometer QUAD (X-Ring) Cord Stock Cord stock to make your own O-rings and gaskets Please note: Priced...
0
$0.59

Add:

Quantity Discounts
1-56$0.59
57-333$0.44
334+$0.30
.210" (5.33mm) Buna-N 70 O-Ring Cord Quad X-Ring QN70.210

.210" (5.33mm) Buna-N 70 O-Ring Cord Quad X-Ring

.210" (5.33mm) C/S Nitrile (Buna-N) 70 Durometer QUAD (X-Ring) Cord Stock Cord stock to make your own O-rings and gaskets Please note: Priced...
222
$0.84

Add:

Quantity Discounts
1-39$0.84
40-238$0.63
239+$0.42
.275" (7.00mm) Buna-N 70 O-Ring Cord Quad X-Ring QN70.275

.275" (7.00mm) Buna-N 70 O-Ring Cord Quad X-Ring

.275" (7.00 MM) C/S Nitrile (Buna-N) 70 Durometer QUAD (X-Ring) Cord Stock Cord stock to make your own O-rings and gaskets Please note: Priced...
0
$1.09

Add:

Quantity Discounts
1-30$1.09
31-181$0.82
182+$0.55


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