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
6, 32 - Bottom air seal and outlet foam set 1 × £0.00
Socket 1/2 inch BSP F/F 1 × £2.53
Air stone 50mm ball shape to take 3mm hose 2 × £3.69
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
Check Valve to take 3mm hose see 2559 above 1 × £5.78