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Displaying 1 to 4 (of 4 Products)
Product Image Model Product Name Qty. Price
(image for) AS568-440 90A Duro Buna-N Rubber Dished Back-up Rings BU440-B90

AS568-440 90A Duro Buna-N Rubber Dished Back-up Rings

AS568-440 (0.236" W X 6.774"ID X 0.117"HT) A backup ring, or anti extrision device, is used in both static and dynamic O-Ring sealing applications. These Buna- N 90 durometer backup rings feature one dished face, allowing an ideal contoured and uniform contact with the O-Ring, and a flat surface for facing the extrusion gap. The Buna-N backup ring material, unlike teflon, still allows slight material elasticity during...
 In Stock: 14
$3.000
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Min Qty:  2
(image for) AS568-440 Solid Chemical Resistant PTFE Backup Rings BU440-TEF-SOL

AS568-440 Solid Chemical Resistant PTFE Backup Rings

Solid PTFE Back-Up Rings – High-Performance Sealing Solutions Enhance your sealing system with The O-Ring Store LLC’s Solid PTFE Back-Up Rings. Manufactured from premium PTFE (Teflon), these back-up rings are engineered to provide exceptional support and performance in high-pressure and high-temperature applications. Available in both split and single-turn designs, PTFE back-up rings are a reliable choice for reducing extrusion and improving...
 In Stock: 4
$22.290
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(image for) AS568-440 UC90 Cast Urethane O-Rings 90 Duro Disogrin 9251 TODI UC90440

AS568-440 UC90 Cast Urethane O-Rings 90 Duro Disogrin 9251 TODI

Nominal Size: 1/4" CS x 6-3/4" ID x 7-1/4" OD Part number UC90440 is an AS568-440 UC90 cast polyester polyurethane O-Ring at 90 Shore A durometer, natural in color, TODI cured and molded from Freudenberg Disogrin 9251 with an actual size of 0.275" cross-section x 6.725" ID x 7.275" OD (6.99mm x 170.81mm x 184.78mm). It belongs to the AS568 -400 series, 0.275" (1/4") nominal cross-section family. It seals to 10,000 psi with standard gland...
 In Stock: 0
$46.520
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Min Qty:  9
(image for) AS568-440 V90 FKM/Viton® Backup Rings Fluorocarbon 90 Durometer BU440-V90

AS568-440 V90 FKM/Viton® Backup Rings Fluorocarbon 90 Durometer

Contoured Back Up Ring Contoured back-up rings are anti-extrusion devices, used in both static and dynamic sealing environments; they are also useful when mating part clearances are not tightly controlled. In either case they can extend the useful life of O-rings. Contoured back-up rings have a slightly concave face on one side, enabling uniform contact with the entire diameter of the O-rings they are used...
 In Stock: 0
$12.720
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Min Qty:  4
Displaying 1 to 4 (of 4 Products)