Wear Rings

A wear ring is also called a guide ring. M Seals manufactures wear rings for rod and pistons with precise tolerance from a variety of materials such as Lubricated Polyester fabric Laminate, Reinforced Polyacetal, Lubricated Nylons, PEEK, PTFE and Polyimide.

The main characteristics of M Seals wear rings are:

Simple manufacture of groove and assembly
High mechanical strength and resistance to heavy radial loads
Low break-out and running coefficient of friction (between (0.05 and 0.1 on steel when lubricated)
Large selection of sizes.

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Operating conditions

Our wear rings are particularly suitable for replacing traditional soft metal bearings as the low friction benefits, enable them to operate effectively in conditions of minimal lubrication. The wear rings are recommended to be used in the following conditions:

Temperature: - 40°C to + 130°C
Fluids: mineral based fluids, water/glycol, water emulsions, phosphate esters (non-flammable)
Fluid pressure: no limitation
Radial load: in normal lubricated conditions and speeds up to 30 m/min the maximum radial load can be calculated from the formula:

P= D x E x Ps

P	(Kg)	Max radial load
D	(cm)	Ring diameter subject to dynamic movement
E	(cm)	Ring axial width
Ps	(Bar)	370 Bar (ASTM D.695) maximum permissible loading for material.

Surface finish

To ensure long life of the wear rings the surface finishes must not exceed those indicated for the seal being used.

Summary

In the free condition, the wear rings are split and will naturally spring out of round. To avoid potential damage during assembly, recommended lead-in chamfers should be incorporated in the end of the cylinder bore or rod ends.

Details of lead-in chamfers are given for the specific seals and the relevant catalogue will recommended the correct details.

Assembly

No special instructions are necessary although lubrication is desirable and attention to cleanliness is important.

Find your wear-ring in our Web shop

We have a number of items in stock for next day delivery. If you need help or guidance regarding sealing solutions, please fill out our contact form and we will get back to you soon as possible.