I would contact Pyramydair Company. They would be the best choice I can think of to answer this question.
See this link
http://www.pyramydair.com/s/a/CR_Nitro_Piston_Fits_Select_Benjamin_Crosman_Air_Rifles/3830
The gas exerts a force on the piston known as gas pressure.
Usually by the expansion of a gas (steam, combustion products, etc) which moves a piston within a cylinder (or turns a turbine).
Crosman offers a service to locate shops that repair older Crosman airguns. See the link below
No: break barrel rifles are designed to use a "Spring or Nito Gas" piston. C02 doesn't require a break barrel design. BUT Spring designed are much stronger than C02 systems
The piston rings are fitted round the piston to make a better gas-tight fit in the cylinder.
Simple explanation : the gas in forced into the cylinder, then the piston compresses it, then the spark plug makes it explode, which forces the piston back down, turning the crankshaft, forcing another piston into compressing more gas. rinse and repeat.
It transfers force from the expanding gas in the cylinder to the crankshaft via a piston rod.
Needs the seals replaced
When the gas in a movable piston is heated, its temperature increases, causing the gas molecules to gain kinetic energy and move more rapidly. This increased molecular motion results in a rise in pressure, which pushes the piston outward. If the piston is free to move, it will expand, allowing the gas to occupy a larger volume. This process is governed by the principles of thermodynamics, specifically the ideal gas law.
Lifting a piston on a cylinder of gas shows the relationship between volume and pressure of the gas. As the piston is lifted, the volume of the gas increases, which causes the pressure to decrease. This demonstrates Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume when temperature is held constant.
A lopta storm
When a piston moves down in a gas-filled cylinder, the volume of the gas increases, leading to a decrease in pressure according to Boyle's Law, which states that pressure and volume are inversely related for a given amount of gas at constant temperature. If the temperature remains constant, the gas molecules spread out as the piston moves down, resulting in lower density. If the gas can absorb heat, it may also expand and do work on the piston, potentially increasing the temperature depending on the conditions.