| Type | Characteristics | Description |
| SMU | Symmetric, two seal rings | Both-sided for sleeving, for identical connecting dimensions of the pipes |
| SMU-R | One-side reduced, two seal rings | Both-sided for sleeving, one-side reduced (different connecting dimensions of the pipes) |
| SMU-1 | Half-sleeve, one seal ring | One-sided for sleeving, one-sided to be welded with a fillet weld |
| SMU-S | Half-sleeve, one seal ring | One-sided for sleeving, one-sided to be welded with a V-weld |
| SMU-K | Half-sleeve, one seal ring | One-sided for sleeving, one-sided with an on-welded domed end |
| SMU-F | Half-sleeve, one seal ring | One-sided for sleeving, one-sided connection flange |
EXAMPLES OF USE
REPAIR
CONNECTION AND REDUCTION
INSERTION OF T-PIECE
SHUT OFF - CLOSURE
