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 5920-00-401-7951
NSN 5855-01-384-3314
NSN 6320-00-228-5678
NSN 5910-01-539-9571
NSN 6105-01-031-5773
NSN 5950-01-266-6107
NSN 6240-01-275-4535
NSN 5905-00-104-5963
NSN 6240-01-451-1409
NSN 6145-00-360-7760
NSN 6110-01-515-0420
NSN 6240-00-275-1950