90A Durometer Urethane Back-Up Rings -145 Dash Size, Per Pack

Alternate Part Numbers
Alternate Part Number C1BU42
Dash Size
-145
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Pack Size
1.00
UOM
EA
Package Qty.
6
Supplier Part Number
575-145
Type
Urethane
Product Weight
0.01 lbs

Product Questions & Answers

these stretch for install and then snap back to size -- how's that work in practice when you're putting 'em on in tight quarters?
Question by: Rod P on Nov 7, 2025, 8:30 AM
Urethane has enough natural flex to let you stretch the ring over the groove or gland without needing any special tooling. Once it seats, the material rebounds to its original shape pretty quickly, which keeps the fit snug and consistent. For tight spots, working the ring on with your fingers is usually enough. No adhesives or heat required.
Answer by: Customer Support on Nov 8, 2025, 6:40 PM

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