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 6240-01-464-4571
NSN 6650-01-463-8405
NSN 5996-01-604-9653
NSN 7035-00-076-4097
NSN 5960-01-089-7174
NSN 6320-01-608-1935
NSN 6610-01-559-5073
NSN 5920-01-069-7351
NSN 6145-01-371-8630
NSN 5835-01-237-3769
NSN 5990-01-172-3883
NSN 5999-01-443-6234