568-251 SILICONE O RINGS

Item S70251 is a Silicone 70A O-Ring built for industrial fluid sealing, equipment repair, pumps, valves, cylinders and general maintenance applications. The item is specified by AS568-251; 5.109 inch (129.77 mm) ID x 0.139 inch (3.53 mm) CS; 5.387 inch (136.83 mm) OD, with 5 1/8 inch nominal ID; 1/8 inch nominal CS for cross-reference against common gland and replacement dimensions. The Silicone compound is selected for flexibility across broad temperature swings and clean sealing applications that require a soft, compliant elastomer. It is with a listed temperature range of -80°F (-62.2°C) to 450°F (232°C), which can help narrow material selection for heat, cold or process exposure. The red color and round profile provide a practical visual identifier during receiving, stocking and installation. This standard industrial O-ring can be used across compatible static and dynamic sealing applications in pumps, valves, cylinders and assemblies. The each-unit format supports precise replacement, kitting, resale and job-specific purchasing. Key selection details include material, hardness, product type, cross-section, inside diameter, outside diameter and application. These specification details help customers and resellers compare the part by performance requirements rather than brand name alone.