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 5855-00-107-7993
NSN 5998-00-453-8297
NSN 6145-01-482-0974
NSN 5915-01-123-8292
NSN 5990-01-157-0441
NSN 6320-01-177-3192
NSN 5965-01-444-3098
NSN 6130-00-771-2100
NSN 5996-01-229-6007
NSN 2925-01-443-5929
NSN 5960-01-425-1454
NSN 6610-01-023-1816