Valco Cincinnati 71283 Hylomar Blue Gasket Marker & Thread Sealant Tube – 100 g

Overview

Valco Cincinnati’s 71283 Hylomar Blue is a non-hardening, blue gasket marker and thread sealant designed to bridge metal-to-metal joints. Its flexible paste remains pliable through temperature swings, enabling long, adjustable assembly windows without stiffness or cracking. The vibrant blue color aids visual confirmation during application, while the tube’s compact packaging keeps workstations organized.

In real-world use, technicians often appreciate how the sealant tolerates rapid temperature changes and exposure to common environmental factors. The formulation aims to resist flame, dust, and moisture, which helps maintain seals across varied working conditions. While not a guarantee for every situation, these traits are commonly cited as helpful in maintaining joint integrity during maintenance and service tasks.

Key properties

• Non-hardening and dry formula with unlimited assembly time
• Vibration resistant to maintain seals through movement
• Resistant to water, engine coolant, petroleum, lubricating oils, kerosene, and some fluorocarbons
• Flame, dust, and moisture protective characteristics

The blue universal sealant is approved worldwide for sealing gas and diesel engines and automotive transmissions, reflecting broad compatibility and tested performance across many applications.

Performance in practice

Users report smoother resealing on mating surfaces and clear visibility of the sealant bead due to its characteristic color. Its semi-rigid feel helps balance flexibility with a dependable seal over time, especially where parts may experience thermal cycling or vibration.

Typical applications

• Water and oil pumps, cylinder heads, gasket pans
• Semi-rigid coating joints and waterproofing for motors and outdoor equipment
• Manifold inlets, oil pump seals, gearbox and transmission components
• Sealing threads, gas turbines, water-cooled generators, and turbo vacuum systems
• Machined flange interfaces on various mechanical assemblies

• Inspection instrument covers, outdoor high-voltage switches, and electrical housings
• Sealant for mechanical joints requiring flexible, long-lasting seals

Usage and handling tips

Apply to clean, dry surfaces with a steady bead. The product remains workable during assembly and does not cure, making rework straightforward. A small amount is often sufficient for metal-to-metal seals. Store in a cool, dry place and use within the product’s expiration window for best results.

Product details

• 3.5 oz tube – carton packing
• Blue Hylomar Universal is approved worldwide on sealing gas and diesel engines and automotive transmissions
• Non-hardening and dry; unlimited assembly time; vibration resistant