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 6220-01-193-4960
NSN 6240-01-160-7430
NSN 2925-01-412-9520
NSN 5950-00-260-5591
NSN 5855-01-436-0512
NSN 6650-00-680-9595
NSN 5855-01-250-2421
NSN 5950-01-044-6175
NSN 6645-01-338-1423
NSN 5999-01-071-6413
NSN 5975-00-346-8169
NSN 6220-01-320-2641