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 6685-01-565-7865
NSN 6135-01-622-1296
NSN 5895-01-131-7723
NSN 5855-00-688-9954
NSN 2925-01-633-4048
NSN 5960-01-495-0859
NSN 5965-00-564-4399
NSN 6145-01-653-0832
NSN 4140-00-496-8626
NSN 5925-00-004-7703
NSN 5960-01-271-8107
NSN 5925-01-280-3758