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Caster Mounting Washers

Sizes: 3/4 x 1-3/16 in and 1 x 1-15/16 inTypes: flanged combo, flat thrust, steel on neopreneMost in packs of 10
Wheel hub washers for rebuilding caster wheels, mainly 2 in wide wheels. Flanged combo washers press into each side of the wheel bore to hold the roller bearing and spanner bushing in place. Flat thrust washers take side load, and steel on neoprene washers add a soft seal against dirt.

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3 types

Wheel = wheel diameter · capacity is per caster.

Caster Mounting Washers: buying guide

Caster wheel washers for rebuilding wheel hubs: flanged combo, flat thrust and steel on neoprene washers in 3/4 x 1-3/16 and 1 x 1-15/16 in, most in packs of 10.

3/4 x 1-3/16 in1 x 1-15/16 inPlastic and steelPacks of 10

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Washers listed

Washer ID x OD Material
Flanged combo washer 3/4 x 1-3/16 in Plastic or steel
Flat thrust washer 3/4 x 1-3/16 in Steel
Steel on neoprene flat washer, 10 pack 3/4 x 1-3/16 in Steel and neoprene
Combo washer 1 x 1-15/16 in Steel
Flat thrust washer, 10 pack 1 x 1-15/16 in Steel
Steel on neoprene flat washer, 10 pack 1 x 1-15/16 in Steel and neoprene

From product titles and listings [S1].

Picking the size

The OD matches the bore of the wheel hub and the ID matches the bearing. A 3/4 in ID washer goes with a 3/4 in ID roller bearing and a 3/4 to 1/2 in spanner bushing; the 1 in size suits wheels with a 1 in bearing.

Plastic or steel

  • Plastic: light, will not rust, fine for most cart wheels.
  • Steel: stiffer, for heavier wheels and side loads.
  • Steel on neoprene: keeps grit and water out of the bearing.

Caster washer questions

What is a combo washer?

A flanged washer that presses into the wheel bore to hold the bearing and spanner bushing in place.

Which size do I need?

Match the OD to the wheel bore and the ID to the bearing: 3/4 x 1-3/16 in or 1 x 1-15/16 in.

Why use a steel on neoprene washer?

The neoprene ring seals out dirt and water and keeps the washer from wearing the bushing.

Sources

  • [S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.

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