Sierra Marine O-Ring 187120

0.215 Inch Inside Diameter x 0.065 Inch Thickness; Single; Fits Chrysler/ Force/ US Marine/ Mercury Marine/ Johnson/ Evinrude/ OMC Stern Drive/ Sears/ Mercury Sport Jet Outboard Engines

The Sierra Marine O-Ring 187120 is a replacement sealing component designed for marine service and equipment maintenance. This part helps create a secure seal between compatible mating surfaces, supporting reliable operation and helping prevent leakage in the application where it is installed. It is suited for repair, restoration, and routine replacement needs when the original O-ring is worn, damaged, flattened, or no longer sealing effectively.
Use the Sierra Marine O-Ring 187120 as a direct replacement only after confirming compatibility with your engine, assembly, or marine system. O-rings can look similar while differing in fit, material, and application, so compare the part number with your equipment documentation or the component being replaced before installation. Proper groove condition, surface cleanliness, and correct seating are important for achieving the intended seal.
For installation, remove the old seal carefully and inspect the groove and mating surfaces for dirt, corrosion, cuts, or damage. Clean the area with an appropriate method, position the new O-ring without twisting or stretching it, and verify that it is seated evenly before reassembling the component. The Sierra Marine brand is recognized for replacement parts serving marine maintenance requirements, making this O-ring a practical choice for maintaining compatible equipment with the correct replacement part.

Features:

• Brand: Sierra Marine

• Part Number: 187120

• Product Type: Replacement O-ring sealing component

• Application: Marine equipment repair and maintenance

• Use: Verify