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 5910-01-076-4955
NSN 5905-01-630-4057
NSN 5915-00-689-4575
NSN 6620-01-009-1423
NSN 5925-01-621-1509
NSN 6610-01-459-0601
NSN 6150-01-263-4437
NSN 6620-01-305-0412
NSN 6610-00-428-3678
NSN 6105-00-442-2309
NSN 5925-00-999-1710
NSN 5835-00-289-9080