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National Stock Number:
4310-00-491-5026
Federal Supply Class:
4310
National Item Identification Number:
004915026
Description:
RING,PISTON
Detail:
A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes PACKING, PREFORMED; RETAINER, OIL SEAL; RETAINER, PACKING; RING, RETAINING; RING WIPER; and SEAL RING, METAL.
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Manufacturer Information:
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Techincal Specification:
| CROSS-SECTIONAL SHAPE STYLE | BEVELED FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL | | JOINT STYLE | STEP JOINT | | OVERALL WIDTH | 0.4970 INCHES MINIMUM AND 0.4980 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | OIL PASSAGE TYPE AND QUANTITY | 1 GROOVE OUTSIDE PERIPHERY | | OIL PASSAGE TYPE AND QUANTITY | 8 SLOT HORIZONTALLY THROUGH RING | | PIN HOLE STYLE | HALF ROUND PINHOLE AT JOINT | | PIN HOLE SLOT LENGTH | 0.140 INCHES NOMINAL | | RADIAL WALL THICKNESS | 0.2550 INCHES MINIMUM AND 0.2700 INCHES MAXIMUM | | RING STYLE | CONCENTRIC | | RING WIDTH PIN HOLE DEPTH | 0.015 INCHES MINIMUM AND 0.030 INCHES MAXIMUM | | STANDARD BORE DIAMETER | 7.000 INCHES | | SURFACE TREATMENT | PHOSPHATE OVERALL |
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