Accessories for Strain Relief Fittings
Provide the external seal between Installation and Strain Relief.
Description
If NEMA 4x or 6 (IP 68 or IP 69K – Submersible) is required, O-Rings or Seal Rings 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 O-Ring is the best solution.
The Snap Elbows and some of the Conduit Fittings don’t have a recess for an O-Ring. In that case, the Seal Ring would be the better choice, unless the hole can be beveled to accommodate an O-Ring.
Dimensions
Dimensions tables are long and do not adequately fit on mobile devices.
View this page on a tablet or computer, or call Estco with questions about dimensions:
| Seal Rings | |||||
| PART NUMBERS | THREAD TYPE & SIZE | DIMENSIONS IN INCHES (mm) | |||
| Polyethylene | Fiber-reinforced Silicone Plastic | A | B | C | |
| Hole O.D. | Height | Outer Diameter | |||
| SR-SR-07-NY | SR-SR-07-HD | PG 7 | .49 (12.5) | .65 (16.5) | .06 (1.5) |
| SR-SR-09-NY | SR-SR-09-HD | PG 9 | .60 (15.2) | .75 (19) | .06 (1.5) |
| SR-SR-11-NY | SR-SR-11-HD | PG 11 | .73 (18.6) | .89 (22.5) | .06 (1.5) |
| SR-SR-13-NY | SR-SR-13-HD | PG 13 | .80 (20.4) | .98 (25) | .06 (1.5) |
| SR-SR-16-NY | SR-SR-16-HD | PG 16 | .89 (22.5) | 1.06 (27) | .06 (1.5) |
| SR-SR-21-NY | SR-SR-21-HD | PG 21 | 1.11 (28.3) | 1.32 (33.5) | .06 (1.5) |
| SR-SR-29-NY | SR-SR-29-HD | PG 29 | 1.46 (37) | 1.71 (43.5) | .08 (2) |
| SR-SR-36-NY | SR-SR-36-HD | PG 36 | 1.85 (47) | 2.17 (55) | .08 (2) |
| SR-SR-42-NY | SR-SR-42-HD | PG 42 | 2.13 (54) | 2.48 (63) | .08 (2) |
| SR-SR-48-NY | SR-SR-48-HD | PG 48 | 2.33 (59.3) | 2.72 (69) | .08 (2) |
| SR-SR-11-NY | SR-SR-11-HD | 3/8″ NPT | .73 (18.6) | .89 (22.5) | .06 (1.5) |
| SR-SR-13-NY | SR-SR-13-HD | 1/2″ NPT | .80 (20.4) | .98 (25) | .06 (1.5) |
| SR-SR-34-NY | SR-SR-21-HD | 3/4″ NPT | 1.06 (27) | 1.43 (36) | .06 (1.5) |
| SR-SM-12-NY | SR-SM-12-HD | M12 x 1.5 | .47 (12) | .63 (16) | .08 (2) |
| SR-SM-16-NY | SR-SM-16-HD | M16 x 1.5 | .63 (16) | .79 (20) | .08 (2) |
| SR-SM-20-NY | SR-SM-20-HD | M20 x 1.5 | .79 (20) | .94 (24) | .08 (2) |
| SR-SM-25-NY | SR-SM-25-HD | M25 x 1.5 | .98 (25) | 1.22 (31) | .08 (2) |
| SR-SM-32-NY | SR-SM-32-HD | M32 x 1.5 | 1.26 (32) | 1.50 (38) | .08 (2) |
| SR-SM-40-NY | SR-SM-40-HD | M40 x 1.5 | 1.57 (40) | 1.96 (48) | .08 (2) |
| SR-SM-50-NY | SR-SM-50-HD | M50 x 1.5 | 1.97 (50) | 2.28 (58) | .08 (2) |
| SR-SM-63-NY | SR-SM-63-HD | M63 x 1.5 | 2.48 (63) | 2.83 (72) | .08 (2) |
| O-Rings | |||||
| PART NUMBERS | THREAD TYPE & SIZE | DIMENSIONS IN INCHES (mm) | |||
| Buna-N | Viton® | Silicone | D | E | |
| Hole O.D. | Height | ||||
| SR-OR-07-BN | SR-OR-07-VT | SR-OR-07-SI | PG 7 | .39 (10) | .06 (1.6) |
| SR-OR-09-BN | SR-OR-09-VT | SR-OR-09-SI | PG 9 | .47 (12) | .06 (1.6) |
| SR-OR-11-BN | SR-OR-11-VT | SR-OR-11-SI | PG 11 | .63 (16) | .06 (1.6) |
| SR-OR-13-BN | SR-OR-13-VT | SR-OR-13-SI | PG 13 | .67 (17) | .07 (1.8) |
| SR-OR-16-BN | SR-OR-16-VT | SR-OR-16-SI | PG 16 | .71 (18) | .06 (1.6) |
| SR-OR-21-BN | SR-OR-21-VT | SR-OR-21-SI | PG 21 | 1.02 (26) | .08 (2) |
| SR-OR-29-BN | SR-OR-29-VT | SR-OR-29-SI | PG 29 | 1.30 (33) | .08 (2) |
| SR-OR-36-BN | SR-OR-36-VT | SR-OR-36-SI | PG 36 | 1.73 (44) | .08 (2) |
| SR-OR-42-BN | SR-OR-42-VT | SR-OR-42-SI | PG 42 | 1.97 (50) | .08 (2) |
| SR-OR-48-BN | SR-OR-48-VT | SR-OR-48-SI | PG 48 | 2.17 (55) | .08 (2) |
| SR-OR-38-BN | SR-OR-38-VT | SR-OR-38-SI | 3/8″ NPT | .51 (13) | .08 (2) |
| SR-OR-18-BN | SR-OR-18-VT | SR-OR-18-SI | 1/2″ NPT | .75 (19) | .07 (1.8) |
| SR-OR-34-BN | SR-OR-34-VT | SR-OR-34-SI | 3/4″ NPT | .87 (22) | .08 (2) |
| SR-OR-10-BN | SR-OR-10-VT | SR-OR-10-SI | 1″ NPT | 1.14 (29) | .08 (2) |
| SR-OR-54-BN | SR-OR-54-VT | SR-OR-54-SI | 1-1/4″ NPT | 1.50 (38) | .10 (2.5) |
| SR-OR-64-BN | SR-OR-64-VT | SR-OR-64-SI | 1-1/2″ NPT | 1.77 (45) | .10 (2.5) |
| SR-OM-12-BN | SR-OM-12-VT | SR-OM-12-SI | M12 x 1.5 | .39 (10) | .06 (1.6) |
| SR-OM-16-BN | SR-OM-16-VT | SR-OM-16-SI | M16 x 1.5 | .47 (12) | .06 (1.6) |
| SR-OM-20-BN | SR-OM-20-VT | SR-OM-20-SI | M20 x 1.5 | .67 (17) | .07 (1.8) |
| SR-OM-25-BN | SR-OM-25-VT | SR-OM-25-SI | M25 x 1.5 | .87 (22) | .08 (2) |
| SR-OM-32-BN | SR-OM-32-VT | SR-OM-32-SI | M32 x 1.5 | 1.14 (29) | .08 (2) |
| SR-OM-40-BN | SR-OM-40-VT | SR-OM-40-SI | M40 x 1.5 | 1.38 (35) | .08 (2) |
| SR-OM-50-BN | SR-OM-50-VT | SR-OM-50-SI | M50 x 1.5 | 1.69 (43) | .08 (2) |
| SR-OM-63-BN | SR-OM-63-VT | SR-OM-63-SI | M63 x 1.5 | 2.17 (55) | .08 (2) |