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 6105-01-538-5866
NSN 5990-01-414-7618
NSN 5910-00-246-3561
NSN 5996-01-417-3139
NSN 5996-00-798-7589
NSN 6220-01-297-3218
NSN 5920-01-607-1661
NSN 5960-00-959-5226
NSN 6685-00-949-8962
NSN 5945-00-408-8763
NSN 6645-00-079-1430
NSN 5925-01-438-1944