Reifenventile
1.it may provide complete air-seal
2.it is bent for air service or tire pressure
3.made of rubber

Kurze Gummi Snap-in Ventile,Reifenventile1.material:nature rubber2.height:48mm3.rim hole:11.5mm4.packing:1000pcs/carton5.for use up to 65psi/4.5 bar cold inflation pressure maximum. 

The snap-in type can be quikly mounted to the rim.It is flexible in nature so it may provide complete air-seal even when it is bent for aire service or tire pressure check.
Made with special rubber(as EPDM)compound to resist to zone damage and prevent prmature deterioration caused by rim hole

comprssion,heat,cold.Maximum inflation is 420k Pa(60P.S.I)