A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6130-01-218-9247
NSN 5960-01-093-9491
NSN 5999-01-224-3678
NSN 5996-00-692-6679
NSN 6685-01-519-2778
NSN 6610-01-272-9691
NSN 6685-00-220-2892
NSN 4140-01-012-3996
NSN 5975-00-498-7509
NSN 5855-00-631-4565
NSN 6240-01-301-8668
NSN 5998-00-007-1977