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O-Rings and Seal Rings for Threads
 
O-Ring and Seal Ring Details

 
If NEMA 4x or 6 (European IP 68 - submersible) is required, O-Rings or Seal Rings (ordered separately) should be used when mounting Strain Relief Fittings to a control panel, secured with a locking nut.  The Straight Strain Relief Fittings feature a molded O-Ring groove.  For these fittings, the Buna-N O-Ring is the best solution.  The Snap Elbows and some of the
FIT THREAD
SIZES
PART NUMBER DIMENSIONS (INCHES)
Seal Ring O-Ring A B C D E
PG 7, 1/4"NPT
PG 9
SR-07-NY
SR-09-NY
OR-07-BN
OR-09-BN
.49
.60
.65
.75
.06
.06
.39
.47
.06
.06
 3/8" NPT
PG 11
SR-11-NY
SR-11-NY
OR-38-BN
OR-11-BN
.73
.73
.89
.89
.06
.06
.55
.63
.06
.06
 PG 13.5, 1/2"NPT
PG 16
SR-13-NY
SR-16-NY
OR-13-BN
OR-16-BN
.80
.89
.98
1.06
.06
.06
.67
.71
.07
.06
 PG 21
3/4" NPT
SR-21-NY
SR-21-NY
OR-21-BN
OR-21-BN
1.11
1.11
1.32
1.71
.08
.08
1.02
.87
.08
.08
 PG 29
1" NPT
SR-29-NY
 
OR-29-BN
OR-29-BN
1.46
--
1.71
--
.08
--
1.30
1.14
.08
.08
 1-1/4" NPT
PG 36, 1-1/2"NPT
 
SR-36-NY
OR-36-BN
OR-36-BN
--
1.85
--
2.17
--
.08
1.38
1.69
.08
.08
PG 42
PG 48
SR-42-NY
SR-48-NY
OR-42-BN
OR-48-BN
2.13
2.33
2.48
2.72
.08
.08
1.97
2.17
.08
.08
Conduit Fittings don't have a recess for an O-Ring.  In that case, the Polethylene Seal Ring would be the best choice, unless the hole can be bevelled to accomodate an O-Ring.
 

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