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Three black rubber retainer rings for tumbler barrels

RTumbler, LLC

RTumbler, LLC Replacement Retainer Ring 3 Pack for 3lb Tumbler Barrels

SKU CH-QH3S-7HBN1

Three replacement retainer rings fit 3 lb tumbler barrels, stay pliable to -20 °F and offer 15-year shelf life

  • ColorBlack
  • TypeScience
  • AgeAdult
  • GenderUnisex
  • Compatible with Thumler's A-R1, A-R2, Model-T and MP-1 tumblers
  • Greater flexibility and abrasion resistance than natural rubber
  • 15 year shelf life ensures long-term reliability
  • Remains pliable down to -20 F for cold environments
  • Black retainer rings designed for 3lb tumbler barrels

Replacement Retainer Rings for 3lb Tumblers

This three-pack supplies spare retainer rings sized for Thumler’s A-R1, A-R2, Model-T and MP-1 barrels that hold three pounds of media. The black rings are moulded from a synthetic compound chosen for science and hobby tumbling by adult users.

Fits Existing Barrels Without Modification

Each ring slides onto the barrel rim to hold the lid seal in place, requiring no tools or additional hardware. The material resists abrasion better than natural rubber and remains pliable at temperatures down to -20 F, so the seal stays effective in cold workshops.

Suits Owners Needing Long-Life Spares

The 15 year shelf life makes the pack practical for hobbyists who tumble intermittently and want replacements on hand. Buyers whose barrels use a different lid diameter or who need a single ring rather than a set of three should look elsewhere.

Highlights

  • Compatible with Thumler's A-R1, A-R2, Model-T and MP-1 tumblers
  • Greater flexibility and abrasion resistance than natural rubber
  • 15 year shelf life ensures long-term reliability
  • Remains pliable down to -20 F for cold environments
  • Black retainer rings designed for 3lb tumbler barrels

Specifications

ColorBlack
TypeScience
AgeAdult
GenderUnisex

Questions about this item

How long do the retainer rings last in storage before they degrade?

The rings have a 15 year shelf life so they remain usable for many years if kept as spares.

Will the rings become brittle or crack when the workshop gets cold in winter?

They stay pliable down to -20 F so they keep their flexibility even in freezing conditions.

Which tumbler models do these rings fit so I know they work with my machine?

They are compatible with Thumler's A-R1 A-R2 Model-T and MP-1 tumblers that use 3lb barrels.

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