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 5985-01-496-8700
NSN 5985-01-254-6293
NSN 5985-00-111-3503
NSN 5915-01-141-6726
NSN 6320-00-456-2092
NSN 6610-01-172-4041
NSN 5975-01-503-6999
NSN 4140-00-443-5678
NSN 6145-01-509-6955
NSN 5960-00-018-3477
NSN 5925-00-816-9929
NSN 5910-01-411-5366