Description
Overview:
The Fibre Washers Imperial Sizes - Assorted Box of 400 is a practical kit of sealing washers for plumbing, fuel, air and general machinery assembly. Made from durable fibre with a reddish‐brown finish, they compress slightly under load to create a reliable seal on flat-faced joints and threaded fittings, helping to prevent leaks. This box covers common internal diameter (ID) to outer diameter (OD) sizes used across workshop, plant and garden equipment. Contents include: 3/8 in (9.5 mm) x 5/8 in (15.9 mm), 13/32 in (10.3 mm) x 5/8 in (15.9 mm), approx. 29/64 in (11.5 mm) x 11/16 in (17.5 mm), 1/2 in (12.7 mm) x 3/4 in (19.1 mm), 5/8 in (15.9 mm) x 7/8 in (22.2 mm), and approx. 49/64 in (19.4 mm) x 15/16 in (23.8 mm). Supplied in a compartmented box for easy selection. Manufacturer Part Number (MPN): 105 415.
Key Features:
- Assorted pack of 400 fibre washers covering popular ID × OD sizes for workshop and site use
- Fibre material compresses to form a tight seal on flat faces and parallel threads, helping to reduce weeping and leaks
- Stable, non-metallic and non-conductive washer option for water, oil and air service in low to moderate pressure systems
- Convenient organiser box supports quick identification and restocking on the job
- Useful size range: IDs from 3/8 in to approx. 49/64 in (9.5-19.4 mm) and ODs from 5/8 in to 15/16 in (15.9-23.8 mm)
- Suitable for routine maintenance tasks where a clean, replaceable sealing interface is preferred over liquid sealants
- Simple to fit with hand tools; seat on a clean flat face and tighten to specification
- Cost-effective alternative for many everyday sealing duties across plumbing and machinery
Typical Applications:
Commonly used on tap and valve unions, hose tails, pump housings, filters, carburettor and fuel fittings, compressor and air line connections, gearcase inspection covers, and general pipework in workshops, garages, gardens and on-site. Ideal for creating or restoring a seal after maintenance where the original washer is worn or missing.
Also known as:
Fibre sealing washers, red fibre washers, gasket washers, jointing washers, sealing gaskets, BSP fibre washers, washer gaskets, paper/fibre washers, non-metallic sealing washers.
Product Specifications
| L&S Part No. | 105 415 |
|---|---|
| Unit of Sale | 400 Pieces |
| Size | Sizes: 13/64" x 3/8", 1/4" x 3/8", 3/8" x 5/8", 13/32" x 5/8", 29/64" x 11/16", 1/2" x 3/4", 5/8" x 7/8", 49/64" x 15/16" |


