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Three black rubber retainer rings for tumbler barrels

RTumbler, LLC

RTumbler, LLC Retainer Ring 3 Pack for Thumler's Tumblers 9 Lb A-R6 A-R18

SKU CH-GPT2-2367B

Replacement retainer rings for Thumler's 9 lb tumblers AR6 and AR18, offering greater flexibility and abrasion resistance than natural rubber with a 15 year shelf life

  • Product colorBlack
  • Product typeScience
  • Age groupAdult
  • Suitable forUnisex
  • Keeps tumbler sealed with exact-fit retainer rings for Thumler's 9 lb AR6 and AR18 models
  • Resists wear longer than natural rubber for reliable performance during extended tumbling cycles
  • Remains flexible down to -20 F for consistent operation in cold workshop conditions
  • Ready when needed with 15 year shelf life ensuring long-term storage viability
  • Simple three-pack replacement restores full tumbler function without modification

Replacement Retainer Rings for Thumler's Tumblers

This three-pack of black retainer rings fits Thumler's 9 lb tumblers, models A-R6 and A-R18. They are made from a material that provides greater flexibility and abrasion resistance than natural rubber. The rings stay pliable down to -20 °F and have a 15 year shelf life. They are designed as direct replacements for worn or damaged originals.

Suitable for Hobbyists Maintaining 9 Lb Tumblers

These rings suit adults who operate Thumler's A-R6 or A-R18 tumblers and need reliable sealing components. They are not intended for users of smaller or larger capacity tumblers, nor for other brands of rotary tumblers. Buyers needing a different quantity or a ring for a different barrel size should look elsewhere.

Three Rings Provide Spares for Extended Use

The pack supplies three rings, giving enough capacity to replace a worn ring and keep two spares on hand. This headroom covers multiple barrel changes over years of tumbling. The 15 year shelf life means the unused rings will not degrade in storage. Users running continuous high-volume operations may consume the pack faster.

How it compares

Measured against everything we stock in STEM Kits & Building Blocks, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 97% of the 236 comparable items (median $28.99).

Specifications

Product
Product colorBlack
Product typeScience
More details
Age groupAdult
Suitable forUnisex

Questions about this item

What tumbler models do these retainer rings fit?

They are compatible with Thumler's 9 lb tumblers, specifically the A-R6 and A-R18 models.

How do these rings compare to the original rubber parts on my older tumbler?

They offer greater flexibility and abrasion resistance than natural rubber and stay pliable down to -20 F.

How can I verify the rings are still good after years in storage?

The rings have a 15 year shelf life; check that they remain flexible and show no cracking.

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