SCHOTTEL OEM USIT-Ring (bonded sealing washer) — 27.2 mm bore × 36.0 mm OD × 2.0 mm thickness, steel washer with vulcanised NBR sealing bead. Used under hex-socket screw plugs on the SRP propulsion housing. Service item — replace every time the corresponding plug is removed. Note: this part number identifies the SCHOTTEL part family. The exact dimensional or material specification on the as-supplied part may require confirmation against the vessel serial number and equipment data plate — confirm with the vessel's SCHOTTEL service file before final order.
| Inside diameter | 27.2 mm |
| Outside diameter | 36.0 mm |
| Thickness | 2.0 mm |
| Type | bonded sealing washer (USIT-Ring). |
| Material | Steel washer with vulcanised NBR sealing bead |
| MOQ | 1 |
SRP 1215 FP rudder propeller / marine thruster spare. Confirm against the unit nameplate and SCHOTTEL drawing number before ordering.