Description
Morgan USR seal is a metric asymmetric seal offering superlative dry rod sealing for light and medium duty applications. This seal has become an industry standard seal worldwide owing to its twin lip profile and consistent performance.
Manufactured by Morgan seals, this is an extremely flexible seal making installation very easy. This seal features a twin-lip design offering lower friction, improved sealing, primary lip protection and increased seal stability.
Design Standard
This series of products conform to Trelleborg company RU3 series, Hallite T605 and Parker’s B3/BS series standards.
Technical data
Temperature | -30°C/+110°C |
Pressure | 40 MPa |
Speed | 0.5 m/s |
Medias | Mineral hydraulic oils |
Advantages
• Excellent sealing performance due to elongated contact area and multiple sealing lips.
• Exceptionally high static and dynamic sealing performance.
• Enhanced sealing performance in non-pressurized conditions.
• Penetration of air into the system is largely prevented.
• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Easier installation.
• Insensitive to pressure peaks.
• Improved lubrication due to pressure medium deposit in the dynamic contact area.
• High extrusion resistance.
• Excellent media resistance in case of suitable compound selection.
• Suitable compounds available for special requirements of the chemical process industry.
• Suitable compounds available for special requirements of the food processing industry.
• Dimensions according to ISO 5597.
• Short radial assembly depth.
• Installation in closed and undercut housings.
• Further dimensions of machined series with short lead times available.
Applications
Mainly for the sealing of piston rods and plungers in heavy duty applications in and stationary hydraulics. The dimensions mainly conform to the requirements of ISO 5597 and ISO 3320 for housing and diameters respectively.

Ordering Number | Size of Sealing Element | Groove Size |
| d | D | h | d1 | D1 | H |
USR12 a | 12 | 20 | 5.7 | 12 | 20 | 6.4 |
USR14 a | 14 | 22 | 5 | 14 | 22 | 5.7 |
USR14 b |
| 22 | 5.7 |
| 22 | 6.4 |
USR14 c |
| 24 | 8 |
| 24 | 9 |
USR15 a | 15 | 23 | 5.7 | 15 | 23 | 6.4 |
USR15 b |
| 25 | 8 |
| 25 | 9 |
USR16 a | 16 | 24 | 5 | 16 | 24 | 5.7 |
USR16 b |
| 24 | 5.7 |
| 24 | 6.4 |
USR16 c |
| 26 | 8 |
| 26 | 9 |
USR18 a | 18 | 26 | 5 | 18 | 26 | 5.7 |
USR18 b |
| 26 | 5.7 |
| 26 | 6.4 |
USR18 c |
| 28 | 8 |
| 28 | 9 |
USR20 a | 20 | 28 | 5 | 20 | 28 | 5.7 |
USR20 b |
| 28 | 5.7 |
| 28 | 6.4 |
USR20 c |
| 30 | 8 |
| 30 | 9 |
USR22 a | 22 | 30 | 5.7 | 22 | 30 | 6.4 |
USR22.4 a | 22.4 | 30 | 5 | 22.4 | 30 | 5.7 |
USR22.4 b |
| 32.4 | 8 |
| 32.4 | 9 |
USR25 a | 25 | 33 | 5 | 25 | 33 | 5.7 |
USR25 b |
| 33 | 5.7 |
| 33 | 6.4 |
USR25 c |
| 33 | 6.5 |
| 33 | 7.5 |
USR25 d |
| 33 | 8 |
| 33 | 9 |
USR25 e |
| 35 | 8 |
| 35 | 9 |
USR25 f |
| 35 | 10 |
| 35 | 11 |
USR25 g |
| 38 | 10 |
| 38 | 11 |
USR28 a | 28 | 35.5 | 5 | 28 | 35.5 | 5.7 |
USR28 b |
| 36 | 5.7 |
| 36 | 6.4 |
USR28 c |
| 38 | 8 |
| 38 | 9 |
USR28 d |
| 43 | 10 |
| 43 | 11 |
USR30 a | 30 | 38 | 5.7 | 30 | 38 | 6.4 |
USR30 b |
| 38 | 6 |
| 38 | 7 |
USR30 c |
| 38 | 7 |
| 38 | 8 |
USR30 d |
| 38 | 8 |
| 38 | 9 |
USR30 e |
| 40 | 6 |
| 40 | 7 |
USR30 f |
| 40 | 8 |
| 40 | 9 |
USR30 g |
| 40 | 10 |
| 40 | 11 |
USR30 h |
| 45 | 10 |
| 45 | 11 |
USR145 a | 145 | 153 | 11.5 | 145 | 153 | 12.5 |
USR145 b |
| 155 | 12 |
| 155 | 13 |
USR145 c |
| 160 | 12 |
| 160 | 13 |
USR150 a | 150 | 158 | 11.5 | 150 | 158 | 12.5 |
USR150 b |
| 170 | 12 |
| 170 | 13 |
USR150 c |
| 170 | 15 |
| 170 | 16 |
USR150 d |
| 170 | 16 |
| 170 | 17 |
USR155 a | 155 | 163 | 11.5 | 155 | 163 | 12.5 |
USR155 b |
| 165 | 12 |
| 165 | 13 |
USR160 a | 160 | 168 | 11.5 | 160 | 168 | 12.5 |
USR160 b |
| 170 | 12 |
| 170 | 13 |
USR160 c |
| 175 | 9 |
| 175 | 10 |
USR160 d |
| 180 | 12 |
| 180 | 13 |
USR160 e |
| 180 | 15 |
| 180 | 16 |
USR160 f |
| 180 | 16 |
| 180 | 17 |
USR160 g |
| 185 | 16 |
| 185 | 17 |
USR160 h |
| 185 | 19 |
| 185 | 20 |
USR165 a | 165 | 173 | 11.5 | 165 | 173 | 12.5 |
USR165 b |
| 180 | 9 |
| 180 | 10 |
USR170 a | 170 | 178 | 11.5 | 170 | 178 | 12.5 |
USR170 b |
| 180 | 12 |
| 180 | 13 |
USR170 c |
| 190 | 12 |
| 190 | 13 |
USR170 d |
| 190 | 15 |
| 190 | 16 |
USR170 e |
| 190 | 16 |
| 190 | 17 |
USR170 f |
| 195 | 16 |
| 195 | 17 |
USR175 a | 175 | 200 | 16 | 175 | 200 | 17 |
USR180 a | 180 | 188 | 11.5 | 180 | 188 | 12.5 |
USR180 b |
| 200 | 12 |
| 200 | 13 |
USR180 c |
| 200 | 16 |
| 200 | 17 |
USR190 a | 190 | 210 | 12 | 190 | 210 | 13 |
USR190 b |
| 210 | 16 |
| 210 | 17 |
USR190 c |
| 215 | 16 |
| 215 | 17 |
USR200 a | 200 | 208 | 11.5 | 200 | 208 | 12.5 |
USR200 b |
| 220 | 12 |
| 220 | 13 |
USR200 c |
| 220 | 16 |
| 220 | 17 |
USR200 d |
| 225 | 16 |
| 225 | 17 |
USR200 e |
| 225 | 19 |
| 225 | 20 |