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 7035-01-344-4192
NSN 6220-01-296-7125
NSN 5950-01-634-0677
NSN 2925-00-247-6248
NSN 6620-01-466-8991
NSN 5950-00-059-5044
NSN 6145-00-320-9650
NSN 5910-01-297-4813
NSN 4140-00-849-8371
NSN 6145-01-578-2045
NSN 6320-01-643-0850
NSN 4140-01-217-1511