7 - Rubber washer, internal dia 45mm approx, external dia 60mm approx. Will fit 1 1/2 inch BSP male threads. Please note this may be supplied as int dia 48mm ext dia 72mm - either size should still suit your requirements. 1 × £1.33
Silicone airline tubing CLEAR, internal bore 3mm. We will cut this to the continuous length you require (whole metres only - maximum reel length 100 metres). Price shown is per metre. Silicone tubing is recommended for use with air pumps. 1 × £0.88