Vehicle components are placed under unprecedented demands in this modern age and Grayson’s new range of silicone hose have been designed and manufactured to operate consistently well in the most extreme environments.

All Grayson hoses are made from high quality silicone provide maximum strength, increased pressure tolerance and longevity against high temperatures.

The 4ply GOSH (Grayson OAT Resistant Hose) has a unique silicone liner to ensure there is no coolant loss through wicking and helps improve the life of the hose.

Our silicone hoses meet the latest automotive standards including SAE J20 R1 Class and specialist hoses can be supplied to rail standards:

  • BS6853: 1999 Cat 1a
  • EN45545-2
  • NF F-16-101 Categories F1 and I2
  • DIN 5510-2
  • LUL 1-085 A2 Table 4

Our 4 Ply GOSH hose options are backed with a 2 year warranty and 3 Ply / 4 Ply HD are supplied with a standard 12 month’s warranty.

We also supply Superflex hoses which have been developed to easily fit onto applications that may otherwise have required a shaped hose to be supplied. Wire wound with galvanised steel to reduce weakening, Superflex hoses offer a high quality, versatile, and cost effective alternative to silicone hose.

Applications for Silicone Hose
3 Ply Hose 4 Ply Heavy Duty 4 Ply GOSH Range
Typical Applications HVAC Systems and low pressure HVAC Systems, Power Electronics and lower pressure applications HVAC systems and larger engine applications

 

Product Range Includes:

  • 4 Ply Heavy Duty (Only available in North America)
  • 4 Ply GOSH Range (Grayson OAT Resistant Range)
  • 3 Ply Silicone Hose (Standard)
  • For Coolant and Radiator
  • Turbo Charger and Air Intake
  • Superflex Hose
  • Hose Clips
  • Hose Kits
  • Air Trunking
4 Ply Heavy Duty
4 Ply GOSH
3 Ply (Standard)
Silicone Hose Superflex

3 Ply Information

3 Ply Silicone Hose

Our 3 Ply silicone hose is designed to operate under extreme conditions. Hoses are manufactured using high quality silicone and fabric from world leading suppliers. We offer 3 and 4 ply depending on diameter or customer specific requirements. 1 year warranty.

Designed for the demanding requirements of bus & truck applications and meets and exceeds SAE J20 R1 Class A. Primarily designed for the use in coolant and heating systems.

Please note that care needs taking when using OAT (Organic Acid Technology) Extended Life coolants.

General Information
  • Working Temperature -50°C to +180°C
  • Standard colour blue
  • Minimum Burst Pressure 6mm 26.6 bar to 152mm 3.2 bar
  • All sizes 6mm to 48mm = 3 ply
Silicone Compound Specification
  • Hardness (IHRD) 70 +/- 5
  • Density (g/cm3) 1.22 +/-0.5
  • Tensile strength (MPa) 7 min
  • Elongation at break (%) 200 min
  • Tear strength (kN/m) 15 min
  • Compression set (%) 18 max
Reinforcement Fabric
  • 3 ply high quality polyester fabric
Construction
  • 3 ply wall 4mm +/- 0.3mm

Available in various colours. P/No. will reflect the colour required. All colours except Blue to have Black liner.

 

4 Ply Heavy Duty Information (Only available in North America)

4 Ply Heavy Duty Silicone Hose

Our Heavy Duty silicone hose, offers an option between our standard 3 Ply hose and GOSH compatible hose. 1 year warranty.

The construction of Heavy Duty hose exceeds our standard 3 Ply hose. Designed for EPA (Environmental Protection Agency) 2013.

Heavy Duty hose offers higher burst pressures than conventional polyester reinforced hoses and offers better service with GOSH Extended Life coolants.

General Information
  • Working Temperature -50°C/-58°F to +180°C/+356°F
  • Standard blue outer colour
  • Minimum Burst Pressure 6mm 34.0 bar to 152mm 4.6 bar
  • All sizes 4 ply 89mm and above
Silicone Compound Specification
  • Hardness (IHRD) 70 +/- 5
  • Density (g/cm3) 1.22 +/- 0.5
  • Tensile strength (MPa) 7 min
  • Elongation at break (%) 200 min
  • Tear strength (kN/m) 15 min
  • Compression set (%) 18 max
Reinforcement Fabric
  • 4 ply high quality polyester fabric
  • Tear strength (kN/m) 15 min
  • Compression set (%) 18 max
Construction
  • FVMQ (Fluorosilicone Rubber)
  • 4.3mm wall thickness +/- 0.5mm
  • Cellulose bound (smooth finish)

Straight hose available in 1, 2, 3 and 4 metre lengths up to 76mm.

 

4 Ply GOSH Information

4 Ply GOSH – Grayson (Oat Resistant) Silicone Hose

OAT (Organic Acid Technology) resistant silicone hose, offers an option between EPDM (Ethylene Propylene Diene Monomers), standard polyester silicone hose and FVMQ (Fluorosilicone Rubber) lined hose, both from a cost and performance aspect. 2 year warranty.

The construction of the GOSH hose eliminates some of the potential failure points of a FVMQ liner and standard polyester SH whilst out performing EPDM.

The GOSH Grade will also operate at a higher temperature and burst pressure than conventional polyester reinforced silicone hoses.

General Information
  • Working Temperature -50°C to +200°C
  • Standard colour black liner with red outer
  • Minimum Burst Pressure 6mm 38.0 bar to 152mm 7.1 bar
  • All sizes 4 ply as standard
Silicone Compound Specification
  • Hardness (IHRD) 70 +/- 5
  • Density (g/cm3) 1.22 +/- 0.5
  • Tensile strength (MPa) 7 min
  • Elongation at break (%) 200 min
  • Tear strength (kN/m) 15 min
  • Compression set (%) 18 max
Reinforcement Fabric
  • 4 ply high quality OAT coolant resistant fabric
Construction
  • 4 ply GOSH
  • 5.3mm wall thickness +/- 0.5mm
  • Cellulose bound (smooth finish)

Straight hose available in 1, 2, 3 and 4 metre lengths up to 76mm.

 

How to measure Silicone Hose


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