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 5920-00-081-3080
NSN 5950-00-433-7931
NSN 5895-00-989-1025
NSN 5920-00-271-3217
NSN 6105-01-350-4314
NSN 5950-01-292-7099
NSN 5950-01-421-3169
NSN 5925-01-529-6371
NSN 5996-00-231-9322
NSN 6135-01-321-5659
NSN 5950-01-199-4501
NSN 6240-01-426-5581