Air inflation system

An air inflation system for a vehicle including an axle that supports a wheel and an air supply structure that includes air, the air inflation system comprising:

• a rotary coupler comprising:
• a tubular member for communicating with the air supply structure;
• a sleeve member connected to an end portion of the tubular member;
• a bearing having an opening that receives the sleeve member;
• a housing body having a hollow interior portion, wherein the tubular member is received in the hollow interior portion;
• a housing cap attached to the housing body, wherein the housing cap is provided for communicating with at least one air connection element that is in communication with the wheel;
• a first seal for sealing an area between the tubular member and the housing body, wherein the first seal engages the tubular member and the housing body;
• a second seal for sealing an area between the housing body and the housing cap;
• wherein the rotary coupler is provided for supplying air from the air supply structure to the wheel.