. durable and practical to use. Delicate and exquisite, highly match the equipment. Has higher heat resistance and stretchability, and is easier to install. Solid and durable, long service life. Without this sealing ring, the nozzle of the steam cleaner will cause the phenomenon of back spray steam when in use, which is likely to cause burns. So when you find that the sealing ring is aging and , please replace it in time. Replacement O-ring set for replacement of O-rings for diverse steam cleaner accessories. Including safety lock, detail nozzle, extension, steam hose and iron connection. Useful spare part set for uninterrupted use. Heavy duty KARCHER O-rings for s and steam cleaners. Fits behind the nozzle. on the lance and HP hose (that screws onto the machine)on all HD and HDS machines. Also fits K2 K3 K4 K5 K6 K7 Number: 2.640-729.0 Colour:As Shown Material:plastic Package Contents: 1 set x O Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!