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 6650-01-107-6430
NSN 6105-00-451-1206
NSN 6240-01-426-5581
NSN 6645-01-469-2458
NSN 5910-01-171-0563
NSN 6610-00-451-8840
NSN 5985-01-253-9911
NSN 5925-01-485-3402
NSN 4140-01-188-6977
NSN 6145-00-834-2676
NSN 5930-01-204-8259
NSN 5925-00-138-7585