Common Materials for Agricultural Machinery Gland Covers
These are the main materials used for agricultural machinery gland covers, explained simply, clearly, and practically:
Cast Iron (Gray Iron, Ductile Iron)
High strength, wear-resistant, good load-bearing capacity
Mainly used for: Heavy-duty parts such as walking wheels, supporting wheels, and guide wheels of tractors and harvesters
Steel Stamping Parts (Carbon Steel)
Low cost, lightweight, high versatility
Mainly used for: Gearbox covers, bearing end covers, ordinary sealing gland covers

Cast Steel
Stronger and more impact-resistant than cast iron
Mainly used for: Gland covers in high-torque, high-load applications
Aluminum Alloy / Die-cast Aluminum
Lightweight, excellent heat dissipation, corrosion-resistant
Mainly used for: Non-load-bearing but sealed parts such as hydraulic systems and upper gearbox covers
Engineering Plastics (Nylon, ABS, Reinforced Plastics)
Rust-proof, insulating, inexpensive
Mainly used for: Fuel tank caps, small dust covers, non-load-bearing protective covers
Rubber + Metal Combination (Oil Seal Gland Cover)
Excellent sealing performance, prevents oil leakage and dust ingress
Mainly used for: Bearing end covers and shaft head gland covers
