5521-087x150 by FlexFab | Series 5521 | 1-ply Premium Heater Hose | 0.88" x 1.27" OD | Green | 150ft Spool

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Flexfab Industrial Hose - Series 5521 - Premium Heater Hose

Package Quantity: 150 FT

Specifications for Variant SKU: 5521-087x150 FlexFab
Series:	5521 Series
Hose Color(s):	Green
Internal Diameter:	0.88in
Outer Diameter:	1.27in
Tubing Construction:	Silicone
Cover Construction:	Silicone
Applicable Specs & Approvals:	TMC P303B Class I Grade II, Filter-All-Specifications and Approvals_SAE J20 R3 Class A

Silicone Heater Hose

Series 5521 Premium Heater Hose

Green silicone heater hose with a red liner and 1 ply of nylon fiber reinforcement — a thicker wall for higher pressure handling than standard heater hose.

1

What is this hose used for?

Resistant to coolant additives
Resists hardening, cracking, cold leaks, aging and many chemicals
Ideal for extreme temperature and various pressure ranges where high performance levels are required

2

What are the key specifications?

Construction

Silicone hose with 1 ply of nylon fiber reinforcement

Cover / Liner

Green cover, red liner

Standards

Meets or exceeds SAE J20 R3 Class A and TMC RP303B Class I Grade II

Temperature Range

-65°F (-54°C) to +350°F (+177°C)

Wall Thickness

Standard wall, .170" / .220"

Working Pressure

1/3 of the burst pressure

Bend Radius

5 times the hose ID

Lengths

25 ft and 50 ft boxes; longer lengths on wooden spools

3

Which sizes are available?

Part Number	Inside Diameter	Outside Diameter	Actual Burst Pressure	Burst Pressure — SAE J20 R3	Burst Pressure — TMC	Weight	Length	Lined Worm Gear Clamp
5521-025x25	0.25"	0.64"	475 PSI	475 PSI	125 PSI	0.121 lbs/ft	25 ft Box	—
5521-025x50	0.25"	0.64"	475 PSI	475 PSI	125 PSI	0.121 lbs/ft	50 ft Box	—
5521-025x800	0.25"	0.64"	475 PSI	475 PSI	125 PSI	0.121 lbs/ft	800 ft Spool	—
5521-031x25	0.31"	0.70"	475 PSI	475 PSI	125 PSI	0.151 lbs/ft	25 ft Box	—
5521-031x600	0.31"	0.70"	475 PSI	475 PSI	125 PSI	0.151 lbs/ft	600 ft Spool	—
5521-038x25	0.38"	0.77"	475 PSI	475 PSI	125 PSI	0.181 lbs/ft	25 ft Box	FLX2582-0006
5521-038x50	0.38"	0.77"	475 PSI	475 PSI	125 PSI	0.181 lbs/ft	50 ft Box	FLX2582-0006
5521-038x500	0.38"	0.77"	475 PSI	475 PSI	125 PSI	0.181 lbs/ft	500 ft Spool	FLX2582-0006
5521-050x25	0.50"	0.89"	425 PSI	425 PSI	125 PSI	0.226 lbs/ft	25 ft Box	FLX2582-0006
5521-050x50	0.50"	0.89"	425 PSI	425 PSI	125 PSI	0.226 lbs/ft	50 ft Box	FLX2582-0006
5521-050x500	0.50"	0.89"	425 PSI	425 PSI	125 PSI	0.226 lbs/ft	500 ft Spool	FLX2582-0006
5521-062x25	0.63"	1.02"	375 PSI	375 PSI	125 PSI	0.258 lbs/ft	25 ft Box	FLX2582-0010
5521-062x50	0.63"	1.02"	375 PSI	375 PSI	125 PSI	0.258 lbs/ft	50 ft Box	FLX2582-0010
5521-062x400	0.63"	1.02"	375 PSI	375 PSI	125 PSI	0.258 lbs/ft	400 ft Spool	FLX2582-0010
5521-075x25	0.75"	1.14"	325 PSI	325 PSI	125 PSI	0.301 lbs/ft	25 ft Box	FLX2582-0012
5521-075x50	0.75"	1.14"	325 PSI	325 PSI	125 PSI	0.301 lbs/ft	50 ft Box	FLX2582-0012
5521-075x300	0.75"	1.14"	325 PSI	325 PSI	125 PSI	0.301 lbs/ft	300 ft Spool	FLX2582-0012
5521-087x25	0.88"	1.27"	300 PSI	300 PSI	125 PSI	0.346 lbs/ft	25 ft Box	FLX2582-0012
5521-087x50	0.88"	1.27"	300 PSI	300 PSI	125 PSI	0.346 lbs/ft	50 ft Box	FLX2582-0012
5521-087x150	0.88"	1.27"	300 PSI	300 PSI	125 PSI	0.346 lbs/ft	150 ft Spool	FLX2582-0012
5521-100x25	1.00"	1.39"	300 PSI	300 PSI	125 PSI	0.391 lbs/ft	25 ft Box	FLX2582-0016
5521-100x50	1.00"	1.39"	300 PSI	300 PSI	125 PSI	0.391 lbs/ft	50 ft Box	FLX2582-0016
5521-100x200	1.00"	1.39"	300 PSI	300 PSI	125 PSI	0.391 lbs/ft	200 ft Spool	FLX2582-0016
5521-125x25	1.25"	1.64"	200 PSI	275 PSI	125 PSI	0.491 lbs/ft	25 ft Box	FLX2582-0020
5521-125x50	1.25"	1.64"	200 PSI	275 PSI	125 PSI	0.491 lbs/ft	50 ft Box	FLX2582-0020
5521-125x150	1.25"	1.64"	200 PSI	275 PSI	125 PSI	0.491 lbs/ft	150 ft Spool	FLX2582-0020

⚠ NOTE: Continuous lengths are not guaranteed. If continuous lengths are required, please contact sales for price and availability.

i

Specifications for reference only. Specific test data available on request.

How is this product sold?

Sold in 25 ft and 50 ft boxes, with longer lengths available on standard wooden spools.

Flexfab

Flexfab produces a massive array of highly-engineered products in a wide variety of materials and designs for the aerospace, automotive, rail, and heavy-duty truck industries. Our proprietary processes of compounding, calendaring, extruding, molding, and bonding silicone rubber, organic rubber, and reinforcing materials makes our products world-class.

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