| Art. No. | Description Cap | Septa Material | Durometer | Thickn. |
| 18 15 1386 | Polypropylene Screw Cap black,
12mm centre hole | Butyl red/PTFE grey | 55° shore A | 1.6mm |
| 18 15 1387 | Polypropylene Screw Cap black,
closed top | Butyl red/PTFE grey | 55° shore A | 1.6mm |
| 18 15 1398 | Polypropylene Screw Cap black,
12mm centre hole | Butyl red/PTFE grey | 55° shore A | 2.0mm |
| 18 15 1544 | Polypropylene Screw Cap black,
closed top | Butyl red/PTFE grey | 55° shore A | 2.0mm |
| 18 15 2102 | Polypropylene Screw Cap black,
12mm centre hole | Silicone white/PTFE red | 55° shore A | 1.5mm |
| 18 15 2069 | Polypropylene Screw Cap black,
closed top | Silicone white/PTFE red | 55° shore A | 1.5mm |
| 18 15 0871 | Polypropylene Screw Cap black,
12mm centre hole | Silicone blue transparent/PTFE white | 45° shore A | 1.7mm |
| 18 15 1132 | Polypropylene Screw Cap black,
closed top | Silicone blue transparent/PTFE white | 45° shore A | 1.7mm |
