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 6130-00-399-0729
NSN 6685-01-388-8956
NSN 5945-01-340-2174
NSN 5990-01-411-5930
NSN 5910-00-968-7656
NSN 5905-01-311-5308
NSN 5910-01-585-5587
NSN 5965-00-463-3929
NSN 6610-01-314-7964
NSN 6620-00-601-3885
NSN 5965-01-121-6135
NSN 5895-01-071-6930