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Back-ups

Back-up rings are installed together with o-rings or other accompanying seals to prevent gap extrusion in sealing applications. They are available in a spiral, split, or solid design.

Seals/Backup Rings 
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-559870
Call for Availability*

BU-TFE-40×1.5×5-C/S

$11.19
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-563388
Call for Availability*

BU-90URE-1.6875×3/32-C/S(10)

$1.05
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-563907
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BU-90URE-4.875×1/8-C/S(1)

$2.90
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-563977
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BU-90URE-3.75×1/8-C/S(5)

$1.87
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-564404
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BACK-UP RING (1)

$12.11
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-615009
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BU-90NBR-9/16×1/16-C/S(25)

$0.38
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-615012
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BU-90NBR-3/4×1/16-C/S(25)

$0.39
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-615126
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BU-90NBR-1.5×1/8-C/S(10)

$0.58
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-615128
Call for Availability*

BU-90NBR-1.75×1/8-C/S(10)

$0.68
/EA
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Cascade Backup Ring | CRC Distribution Inc.
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Cascade Backup Ring

CAS-615130
Call for Availability*

BU-90NBR-2×1/8-C/S(10)

$0.81
/EA
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