Mastercool 42010-10 — 1/4" Flare Gaskets (Pack of 10, Rubber)

Professional rubber gaskets for 1/4" SAE flare connections. Pack of 10 replacement gaskets for manifold gauge sets and charging hoses. Essential replacement parts for maintaining leak-free connections and preventing refrigerant loss.

Pack Contains:

• 10 x Rubber gaskets for 1/4" SAE flare fittings

Key Features:

• 1/4" SAE Flare Size – Standard size for HVAC/R service equipment
• Pack of 10 – Convenient quantity for service technicians
• Rubber Construction – Flexible, durable sealing material
• Replacement Part – Maintains leak-free connections
• Professional Quality – Built to Mastercool standards
• Cost-Effective – Bulk pack saves money vs individual replacements

Specifications:

• Model: 42010-10
• Type: Rubber flare gasket
• Size: 1/4" SAE flare
• Material: Rubber
• Quantity: 10 pieces per pack
• Weight: 10 kg (shipping weight)
• SKU: 42010-10
• Barcode: 700376100365
• HS Code: 40169300

Bulk Pack Available:

• 42010-100 — 1/4" FL Gaskets (100 pack, rubber) – For high-volume users

Compatible With:

• Mastercool brass manifold gauge sets
• Mastercool aluminium manifold gauge sets
• Mastercool charging hoses
• Standard 1/4" SAE flare fittings

Related Manifold Sets:

• 33636-EBC2 — Brass Manifold Set 80mm with Hoses & Case
• 33636-MB — Brass Manifold Set 80mm with 3 x 90cm Hoses
• 93636-E — Aluminium Manifold Set 63mm with 3 x 90cm Hoses

Other Replacement Parts:

• 42017-10 — Screw-Type Valve Core Depressors (10 pack)
• 42044-10 — Depressors (10 pieces)

Applications:

• Replacement for worn or damaged gaskets
• Manifold gauge set maintenance
• Charging hose repair
• Flare fitting connections
• HVAC/R service and repair
• Preventive maintenance

What is a Flare Gasket?

A flare gasket (also called a flare seal) sits between two 1/4" SAE flare fittings to create a leak-free seal. When the flare nut is tightened, it compresses the rubber gasket between the two metal surfaces, preventing refrigerant from escaping. Over time, gaskets can become compressed, hardened, or damaged, requiring replacement.

When to Replace:

• Visible Damage – Gasket is cracked, torn, or deformed
• Leaking Connections – Connection leaks even when properly tightened
• Hardened Gasket – Gasket has lost flexibility due to age or heat
• Preventive Maintenance – Regular replacement as part of service schedule
• After Each Use – Some technicians replace gaskets after every job for maximum reliability

Installation:

1. Remove old or damaged gasket from flare fitting
2. Clean both flare surfaces to remove debris or old gasket material
3. Place new gasket on male flare fitting
4. Connect female flare nut and tighten by hand
5. Use wrench to tighten securely (do not over-tighten)
6. Test connection for leaks

Why Keep Spares?

• Avoid Downtime – Replace worn gaskets immediately
• Prevent Leaks – Fresh gaskets ensure tight seals
• Cost-Effective – Bulk pack saves money vs individual replacements
• Professional Service – Always have spares on hand
• Customer Confidence – No callbacks due to leaking connections

Storage:

• Store in cool, dry place away from direct sunlight
• Keep in sealed container to prevent contamination
• Avoid exposure to oils or solvents
• Replace if gaskets become hard or brittle

Maintenance Tips:

• Inspect gaskets before each use
• Replace if gasket shows any signs of damage
• Keep spares in service van or toolbox
• Clean flare surfaces before installing new gasket
• Do not reuse gaskets after disconnection

Professional Quality: Mastercool replacement parts are manufactured to the same exacting standards as original equipment for reliable, long-lasting performance in demanding HVAC/R service environments.