Yellow Jacket 41118 O-ring Lubricant Silicone Grease

Product Description

The YELLOW JACKET 41118 is a silicone grease formulated specifically for lubricating O-rings used in HVAC, refrigeration, and plumbing service work. Applied during connection assembly, it reduces friction and helps O-rings seat properly without tearing or rolling out of their groove. The white silicone compound is compatible with rubber O-ring materials commonly found in service valves, manifold gauge sets, and hose fittings. This is a small-format tube intended for field and shop use by HVAC technicians and plumbers who regularly swap fittings, replace cores, or rebuild service connections.

This lubricant is used wherever O-rings require protection during assembly. Common applications include refrigerant service hose fittings, Schrader valve cores, manifold gauge connections, and plumbing union seals. Its compact size makes it easy to carry in a service bag or tool pouch. It is manufactured in the United States and packaged in a ready-to-use tube format suitable for single-technician field applications.

Key Features

• Silicone grease composition is safe for use on rubber O-rings without causing swelling or degradation
• White color allows visual confirmation of application coverage
• Compact package dimensions make it suitable for field service kits
• Manufactured in the United States
• Designed specifically for O-ring lubrication, not general-purpose use

Compatibility

Designed for use with O-rings in HVAC, refrigeration, and plumbing service applications, including manifold gauge sets, refrigerant hose fittings, and service valve connections.

Installation Notes

Apply a thin, even coat of lubricant to the O-ring surface before assembly. Recover or isolate refrigerant from the system before servicing any connections that require O-ring replacement. HVAC technicians should follow applicable EPA Section 608 procedures when working on refrigerant circuits. Avoid over-application, as excess lubricant can attract debris and compromise the seal over time.

Technical Specifications

• Composition: Silicone Grease
• Color: White
• For Use With: O-rings
• Package Length: 4 inches
• Package Width: 1.5 inches
• Package Height: 1 inch
• Weight: 0.05 pounds
• Country of Origin: United States

Standard Information

• Brand: YELLOW JACKET
• Manufacturer Part Number: 41118