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 5975-01-560-5598
NSN 5910-01-313-0929
NSN 6685-01-226-2791
NSN 6145-01-574-6745
NSN 6110-00-985-7956
NSN 5895-00-989-8948
NSN 5855-01-424-2769
NSN 6610-00-536-4977
NSN 6685-00-113-8949
NSN 5855-01-448-0695
NSN 5930-00-276-9289
NSN 5895-01-360-7667