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 5975-00-684-8188
NSN 5998-00-113-8123
NSN 6685-01-306-4747
NSN 6320-01-309-4407
NSN 6110-00-190-7523
NSN 6220-01-578-2435
NSN 2925-01-300-2897
NSN 5960-01-109-0768
NSN 6620-01-045-4467
NSN 7035-01-332-3496
NSN 5985-01-549-3903
NSN 6145-00-078-9917