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Black rubber flat washers in 10 sizes inside a compartmented storage box

QKP 143Pcs Flat Rubber Washers Assortment Kit 10 Sizes 7-30mm

SKU CH-9W68-F5TJW

Contains 143 flat rubber washers across 10 sizes from 7 mm to 30 mm for sealing screws, hoses, taps and pipes

  • Featuresflat, 10 Sizes, Rubber, Natural Rubber, Black, 143, Flat
  • Height2 millimeters
  • Width1.7018 L x 10.3886 W x 14.605 H centimeters
  • Length1.7018 L x 10.3886 W x 14.605 H centimeters
  • 143 washers in one kit cover 10 common sizes from 7 mm to 30 mm
  • natural rubber resists water, oil and wear for durable leak-free seals
  • flat profile gives full surface contact to stop drips on taps, hoses and bolts
  • organised storage box sorts every size for instant identification on the job
  • versatile for plumbing, automotive, garden and general household repairs

143-piece rubber washer assortment

This QKP kit supplies 143 flat rubber washers across ten metric sizes ranging from 7 to 30 millimetres. The natural rubber construction resists water, oil and wear while dampening vibration in plumbing, automotive and general maintenance tasks. A compartmented storage box keeps each diameter sorted for quick selection on the job site.

Thermal stability and leak resistance

Natural rubber maintains flexibility across typical household temperature ranges, so washers continue to seal without hardening or cracking under hot water or seasonal changes. The flat profile distributes clamping force evenly, preventing distortion that could open leak paths. No power draw or moving parts mean silent, maintenance-free operation once installed.

Build integration and space efficiency

The box measures 1.7018 by 10.3886 by 14.605 centimetres, fitting easily into a tool bag or workshop drawer without consuming bench space. Each washer is 2 millimetres thick, adding minimal stack height to bolted joints while still filling irregular gaps. Users needing imperial-thread sizes or thicker structural spacers will need separate hardware.

Highlights

  • 143 washers in one kit cover 10 common sizes from 7 mm to 30 mm
  • natural rubber resists water, oil and wear for durable leak-free seals
  • flat profile gives full surface contact to stop drips on taps, hoses and bolts
  • organised storage box sorts every size for instant identification on the job
  • versatile for plumbing, automotive, garden and general household repairs

Specifications

BrandQKP
Featuresflat, 10 Sizes, Rubber, Natural Rubber, Black, 143, Flat
Height2 millimeters
Width1.7018 L x 10.3886 W x 14.605 H centimeters
Length1.7018 L x 10.3886 W x 14.605 H centimeters

Questions about this item

How do I install the 10mm flat rubber washer and what step is often missed?

Place the 10mm washer flat against the mating surface before tightening the screw or fitting; the step often missed is ensuring the 2mm thick rubber sits evenly without twisting, so the seal stays uniform.

When will the natural rubber washers in the 143-piece kit need replacement?

Natural rubber hardens and loses elasticity over time; plan to replace any washer that shows cracking, flattening beyond the original 2mm thickness, or leaks at the joint.

What is the first limit that appears when the 30mm washers are under constant pressure and vibration?

The 2mm thick rubber will gradually take a permanent compression set, reducing its spring-back and allowing the seal to weep before the material itself tears.

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