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 5965-01-307-5059
NSN 6145-00-903-4619
NSN 6320-01-113-7647
NSN 5996-00-597-2234
NSN 5925-01-357-1308
NSN 6145-00-798-4831
NSN 5920-01-301-0190
NSN 2925-01-054-3190
NSN 6135-01-351-1131
NSN 6320-01-334-5305
NSN 6610-00-735-2295
NSN 5855-01-267-2751