Black Rubber Flat Washer Assorted Kit 120-Pack 5mm ID 11mm OD 1.6mm Thickness

Multipurpose 120-Pack Rubber Washer Kit

This 120-piece assortment supplies black rubber flat washers for household plumbing, garden hoses and general fastener sealing. Each washer has a 5 mm inner diameter, 11 mm outer diameter and 1.6 mm thickness. The synthetic rubber material resists deformation, corrosion and static buildup. Homeowners and maintenance crews can replace worn seals on faucets, shower hoses and watering tools with a single kit.

Sustained Sealing Performance

The synthetic rubber compound maintains high elasticity and air-tightness across temperature swings, so seals stay effective during prolonged exposure to water, oil or air pressure. Wear resistance and flame retardancy prevent the washers from hardening or cracking after repeated thermal cycles. This durability reduces the frequency of rework on outdoor irrigation systems and indoor fixtures alike.

Compatibility Check Before Ordering

Verify that the 5 mm inner diameter and 11 mm outer diameter match the fasteners or hose fittings you intend to seal. Confirm the 1.6 mm thickness provides the required compression allowance in your assembly. The kit contains only this single size; projects needing additional diameters will require a separate purchase.