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 5855-01-383-6860
NSN 5895-01-456-4123
NSN 5925-01-059-0275
NSN 5905-00-448-0838
NSN 6240-01-624-1500
NSN 5935-00-736-4498
NSN 5920-01-112-0730
NSN 5950-00-729-4088
NSN 6150-01-202-7966
NSN 5985-00-842-6585
NSN 6220-01-035-4350
NSN 6220-00-925-2233