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 4140-01-432-0292
NSN 5950-00-176-2874
NSN 6105-01-028-4626
NSN 6645-01-201-4327
NSN 5985-00-873-9294
NSN 6220-01-446-6430
NSN 5945-00-483-0398
NSN 5990-01-337-9859
NSN 6130-01-516-0962
NSN 2925-01-577-0004
NSN 5925-01-587-9356
NSN 5950-01-463-3096