K&N Sealing Grease 6 oz — Heat-Resistant Air Filter Sealant for Gasketed & Slip-On Filters

This 6-ounce tube of sealing grease (part number 99-0704) is formulated to help form a secure, long-lasting barrier between filter media and mounting surfaces. It is designed for use with most slip-on or gasketed air filters to prevent unmetered air from bypassing the filter. The compound withstands elevated under-hood temperatures and remains tacky enough to maintain a reliable seal without becoming runny.

Will this sealing grease work with my air filter?

K&N Sealing Grease is compatible with most types of air filter elements that rely on a gasketed or press-fit seal. It is specifically not recommended for clamp-on type filter elements where the grease could interfere with clamping mechanics.

• Works best on gasketed, slip-on, and press-fit filters
• Not advised for clamp-on or band-clamped filter designs
• Safe for use with typical automotive air filter materials
• Single 6 oz package for multiple applications

How does the grease perform under engine heat?

The formula is engineered to resist softening and running at elevated temperatures commonly found in engine bays. It keeps a tacky consistency so the seal remains effective through normal thermal cycles without breaking down quickly.

• Heat-resistant formulation maintains adhesion
• Designed to stay stable under typical under-hood temperatures
• Helps preserve seal integrity through repeated heating and cooling

How should I apply K&N Sealing Grease for the best seal?

Apply a thin, even bead along the mating surface of the filter or housing before fitting the element. Use enough to fill minor gaps but avoid excess that could be squeezed into the intake path; excess can be wiped away with a clean cloth.

• Clean sealing surfaces before applying for best adhesion
• Spread a consistent, thin layer around the gasket or flange
• Re-seat the filter and remove any visible excess grease

How much product is included and what are the dimensions?

This listing includes a single 6-ounce container of sealing grease packaged for retail. The product's compact size fits most toolboxes so you can keep it with other maintenance supplies.

• Quantity: 1 tube (6 oz)
• Package dimensions: 20.32 cm x 6.35 cm x 4.445 cm
• Product type: automotive accessory, made in the United States

Who is this for: K&N Sealing Grease 6 oz is aimed at vehicle owners, DIY mechanics, and professional technicians who install or maintain aftermarket or replacement air filters and want to reduce unfiltered air infiltration. It’s useful for anyone installing gasketed or press-fit filter elements who needs a compact, heat-tolerant compound to improve sealing reliability. Avoid using it on clamp-on style elements where the grease could interfere with the clamp operation.