Specifications

Loctite RTV Blue Silicone Gasket Maker, legacy number 37461 and Henkel IDH 491980, is a one-component RTV silicone supplied in an 80 mL tube. The blue sealant cures with atmospheric moisture into a flexible rubber gasket that helps accommodate vibration and thermal cycling. Henkel recommends it for form-in-place gaskets and dressing suitable pre-cut gaskets on valve covers, oil pans, timing covers, water pumps, thermostat housings, and transmission pans. Its automotive catalog identifies sensor-safe performance once fully cured and oil/fluid resistance. The product is not intended for cylinder-head gaskets or gasoline-contact parts; the technical sheet also cautions against oxygen-rich and strong oxidizing environments. Check the assembly service instructions, allow the required cure, and purchase your sealing supplies at Wofford Truck Parts.

Brand: Loctite
Manufacturer: Henkel Corporation
Legacy Part Number: 37461
Manufacturer IDH Number: 491980
Product Name: RTV Blue Silicone Gasket Maker
Product Type: Form-in-Place Silicone Gasket Maker
Product Category: Oil/Fluids/Chemicals
Sub-category: Sealants and Gasket Makers
Product Chemistry: Acetoxy Silicone
Sealant Type: Room Temperature Vulcanizing (RTV)
Physical Form: Paste
Color: Blue
Container Type: Tube
Container Volume: 80 mL
Container Volume in Fluid Ounces: 2.7 fl oz
Mixing Required: No
Curing Mechanism: Atmospheric Moisture
Cured Material: Flexible Silicone Rubber
Sensor Safe: Yes, When Fully Cured
Automotive Fluid Resistance: Yes, Subject to Chemical Compatibility
Motor Oil Resistance: Yes
Transmission Fluid Resistance: Yes
Antifreeze Resistance: Yes
Gasoline Contact Compatibility: Not Recommended
Minimum Listed Temperature: -65°F
Maximum Listed Intermittent Temperature: 500°F
Temperature Range: -65°F to 500°F Intermittent
Typical Operating Temperature Range: -54°C to 204°C (SI 5015 Technical Data Sheet)
Catalog Tack-Free Time: Approximately 30 Minutes
Technical Data Sheet Tack-Free Limit: Up to 60 Minutes Under Specified Conditions
Catalog Full-Strength Benchmark: 24 Hours
Heavy Service Cure Guidance: Follow Technical Data Sheet and Application Requirements
Application: Form-in-Place Gasketing
Additional Application: Dressing Suitable Pre-Cut Gaskets
Typical Application: Valve Covers
Typical Application: Oil Pans
Typical Application: Timing Covers
Typical Application: Transmission Pans
Typical Application: Water Pumps
Typical Application: Thermostat Housings
Head Gasket Applications: Not Recommended
Specific Gravity: 1.04 at 25°C (SI 5015 Technical Data Sheet)
Shore A Hardness: Greater Than 25 After Specified Cure (SI 5015)
Manufacturer Catalog Case Pack: 12 Tubes
Individual Sales Unit: 1 Tube
UPC: 079340374614
ASIN: B0015PK7F2
Country of Origin: United States (Distributor-Listed)
Product Weight: Not Independently Verified
Supplier-Listed Shipping Weight: 0.244 lb
Supplier-Listed Item Length: 7.40 inches
Supplier-Listed Item Width: 1.40 inches
Supplier-Listed Item Height: 1.40 inches
Actual Shipping Carton Dimensions: Not Verified
Condition: New
Unit of Measure: Each

Compatibility

Freightliner Commercial Trucks — Approved Engine and Drivetrain Gasketing Applications

International Commercial Trucks — Approved Engine and Drivetrain Gasketing Applications

Kenworth Commercial Trucks — Approved Engine and Drivetrain Gasketing Applications

Mack Commercial Trucks — Approved Engine and Drivetrain Gasketing Applications

Peterbilt Commercial Trucks — Approved Engine and Drivetrain Gasketing Applications

Volvo Commercial Trucks — Approved Engine and Drivetrain Gasketing Applications

Western Star Commercial Trucks — Approved Engine and Drivetrain Gasketing Applications


Alternative Part Numbers

  • Dynatex 49203
  • FCP Euro LCT-491980
  • Henkel 491980
  • Loctite 30560
  • Loctite 37461
  • NAPA NCB37461
  • Permatex 80022