O-rings rubber seals made of EPDM for all 1/2 inch and 3/4 inch garden hose systems e.g. Gardena (professional) etc. (100 pieces 3/4 inch 22.3 x 17 mm (thickness 2.65 mm)) : Amazon.de: Business, Industry & Science
19mm ID / 26mm OD White Plastic O-rings Round 3/4 inch opening - Etsy.de
1-3/4 Inch O-Ring Geschweißt Glänzendes Nickel-Finish 2er - Etsy.de
Inch O Ring Kit Assortment NBR 70A | (30 Sizes, Total 382 pcs) by EAI | eBay
Seal (O-ring) for 1/4 inch connections - FPM, 11x1,8 | innovatek Webshop
Individuell geformte O-Ringe | Globaler O-Ring und Dichtung