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 2925-01-416-6927
NSN 4140-00-585-0645
NSN 5905-00-366-7013
NSN 6320-00-149-7570
NSN 6610-00-225-9886
NSN 5990-00-660-8885
NSN 5895-01-190-7042
NSN 2925-01-361-5310
NSN 5960-01-310-2529
NSN 5925-01-645-1891
NSN 5975-00-296-6087
NSN 5910-01-548-2168