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PERMCO 257 BACKUP RING

Description & Features

The PERMCO 257 Backup Ring is a reliable component designed by Permco Inc. to provide superior sealing performance in industrial applications. This backup ring ensures the longevity and effectiveness of hydraulic systems by preventing extrusion and maintaining a secure fit.

Manufactured with precision this backup ring is an essential part in maintaining operational stability. It does not include any adjustable features battery components or electrical flags making it straightforward and dependable for integration into existing systems.

Engineered for durability the PERMCO 257 Backup Ring does not require additional case inclusion or calibration simplifying installation. It is not machine mountable and does not come with blades or diode configurations. The absence of ratcheting and remote control features further emphasizes its specialized role in hydraulic systems.

Supplier Part Number: 947-00813

Specifications

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)

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

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

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

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

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

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

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.

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

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

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

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.