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 5905-01-141-1162
NSN 6620-00-542-1579
NSN 6135-01-534-0310
NSN 5965-01-396-7508
NSN 5999-01-562-0770
NSN 5990-01-299-2014
NSN 6135-00-078-3095
NSN 6240-01-333-5455
NSN 5925-01-484-3201
NSN 5925-01-534-4866
NSN 6610-01-322-7677
NSN 5915-01-356-6502