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PERMCO 257 BACKUP RING

Alternate Part Numbers Alternate Part Number C1LX67	Brand Permco Inc.	Brand Permco	Pack Size 1.00	UOM EA	Supplier Part Number 947-00813	Product Weight 0.42 lbs

Product Questions & Answers 3

Product Questions & Answers

backup ring, what’s it actually do in a hydraulic setup?

Question by: Harold R on Jun 25, 2025, 3:30 PM

In a hydraulic seal stack, a backup ring sits alongside the primary seal to help keep that seal from extruding under pressure. The PERMCO 257 Backup Ring is meant to maintain a secure fit and support sealing performance so the system stays stable over time.

Answer by: Customer Support on Jun 26, 2025, 8:39 PM

How critical is it that I get the right backup ring? What exactly does it do?

Question by: Phil R on Jul 12, 2025, 5:41 PM

A backup ring like the Permco 257 is pretty important for keeping your hydraulic system running smoothly. Its main job is to prevent the seal from squeezing out of place under pressure, which keeps everything tight and leak-free.

Answer by: Customer Support on Jul 14, 2025, 6:17 AM

part number 947-00813 -- is that the same thing as C1LX67, or are those two different parts?

Question by: Steve H on Aug 29, 2025, 7:39 AM

Same part, different numbers. 947-00813 is the supplier part number and C1LX67 is an alternate, so either one gets you to the same Permco 257 Backup Ring.

Answer by: Customer Support on Aug 30, 2025, 5:12 PM