Before purchasing,Please check whether the accessories you need match. Silicone Connector Seals/Gaskets fits Intex Pure Spa, Simple Spa (#11699) x10 Size information od 0.97"inch,id 0.77''inch,thickness 0.2'' inch fits Intex Pure Spa models, including 28403E 28405E 28407E 28409E 28413WL 28421E 28425E 28427E 28429E 28431E 28433WL 28439E 28441E 28441EP 28445EP 28453E 28471EP 28473E 28475E 28481E 28483E fits : SB-B20 All Models SB-H20 PureSpa Bubble SB-HW20 PureSpa Greywood SB-HWF20 PureSpa Greywood SSP-H-20-1 All Models SSP-H-20-1C PureSpa Bubble SJB-HS-20 All Models SJB-HS-30 All Models PS-BH-20 PureSpa Plunge Pool SSP-H-20-1C All Models Before purchasing,Please check whether the accessories you need match. Silicone Connector Seals/Gaskets fits Intex Pure Spa, Simple Spa (#11699) x10 Size information od 0.97"inch,id 0.77''inch,thickness 0.2'' inch fits Intex Pure Spa models, including 28403E 28405E 28407E 28409E 28413WL 28421E 28425E 28427E 28429E 28431E 28433WL 28439E 28441E 28441EP 28445EP 28453E 28471EP 28473E 28475E 28481E 28483E fits : SB-B20 All Models SB-H20 PureSpa Bubble SB-HW20 PureSpa Greywood SB-HWF20 PureSpa Greywood SSP-H-20-1 All Models SSP-H-20-1C PureSpa Bubble SJB-HS-20 All Models SJB-HS-30 All Models PS-BH-20 PureSpa Plunge Pool SSP-H-20-1C All Models