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 5965-01-650-4459
NSN 6320-01-436-9228
NSN 4140-01-030-4122
NSN 5910-01-574-9730
NSN 5960-01-553-4557
NSN 5925-01-152-0087
NSN 5975-01-003-9803
NSN 6145-00-468-1261
NSN 6135-00-449-9775
NSN 6220-00-929-6793
NSN 2925-00-149-0760
NSN 5985-00-160-0835