Red Fibre Washers
M3 - M20
Red vulcanised fibre
Red fibre washers are soft vulcanised fibre sealing washers, used against fluid seepage on plumbing and light mechanical fixings. We supply red fibre washers across a range of metric sizes.
Also known as: fibre washers, vulcanised fibre washers, sealing washers.
Red Fibre Washers dimensions
| Bolt Size | Outside Diameter | Thickness |
|---|---|---|
| M3 | 7.0mm | 0.5mm |
| M4 | 9.0mm | 0.8mm |
| M5 | 10.0mm | 0.8mm |
| M6 | 12.5mm | 0.8mm |
| M8 | 17.0mm | 1.5mm |
| M10 | 21.0mm | 1.5mm |
| M12 | 24.0mm | 1.5mm |
| M16 | 30mm | 1.5mm |
| M20 | 37mm | 1.5mm |
Materials & strength
Conformable sealing
The soft fibre compresses against the joint faces to seal light-duty fluid connections.
Frequently asked
What are red fibre washers used for?
Red fibre is a compressible vulcanised material that conforms to the joint faces as the fixing is tightened, giving a low-cost seal against water and oil on plumbing fittings and light mechanical assemblies.
Can fibre washers be reused?
The washer compresses in service and takes a set, so a fresh washer is the usual practice when a sealing joint is remade.
Need Red Fibre Washers in a non-standard size or material?
Send us your drawing — specials quoted within 24 hours.