SAE 20R BURST PRESSURE RATINGS
SAE 20R Series Coolant Hose
Minimum Burst Pressure Rating
Hose I.D.
SAE 20R1
Std. Wall
SAE 20R2
SAE 20R3
SAE 20R4
SAE 20R5
3/8
475
250
180
1/2
425
250
170
5/8
375
250
160
3/4
325
200
150
7/8
325
200
140
1.0
300
300
175
140
140
1 1/8
300
200
130
130
1 1/4
275
275
130
130
1 3/8
275
275
120
120
1 1/2
250
250
120
120
1 5/8
250
250
110
110
1 3/4
225
225
110
110
2.0
200
200
100
100
2 1/4
175
175
90
90
2 3/8
175
175
80
80
2 1/2
150
150
80
80
2 3/4
125
125
70
70
3.0
85
100
60
60
3 1/4
75
75
50
50
3 1/2
75
75
40
40
4.0
50
50
40
40
Note: Pressures shown are SAE minimum burst ratings. Recommended operating pressure should not exceed 1/3 the value shown for safe operation and best service life.
SAE Legend
SAE 20R2Heavy Duty Radiator Hose w/Embedded Wire
SAE 20R3Heater Hose
SAE 20R4Normal Serivce Radiator Hose
SAE 20R5Normal Service Convoluted w/Embedded Heliacal Wire + Straight Ends (Flex Hose)