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 5835-01-215-5961
NSN 6320-01-144-3810
NSN 5855-01-466-5353
NSN 5945-00-177-4676
NSN 5945-01-046-5178
NSN 2925-01-279-6692
NSN 5950-01-301-5537
NSN 4140-00-264-5796
NSN 5925-01-432-1397
NSN 5905-00-763-9518
NSN 4140-01-225-9539
NSN 5965-01-434-4095