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a. Rotary Shaft Lip Seals (Oil Seals)
Features: Though common, they belong to a functionally specialized category. Their spring-loaded lip design is optimized for dynamic sealing on rotating shafts, differing from the static sealing principle of O-rings.
Applications: Sealing rotating shaft ends in nearly all equipment, such as motors, gearboxes, and wheel hubs. b. Composite Seals
Characteristics: Combines multiple materials or components to achieve functionality unattainable by a single seal. Common types:
Rubber-coated PTFE seals: Feature a metal or plastic skeleton core, an outer rubber layer, and a PTFE lip. Merges rubber's elasticity with PTFE's low friction and chemical resistance.
Coaxial seals (e.g., Grease Seal, Stelflex): Typically consist of an O-ring (providing elasticity) and a wear-resistant plastic ring (e.g., PTFE), used for high-pressure reciprocating motion sealing.
Features: Though common, they belong to a functionally specialized category. Their spring-loaded lip design is optimized for dynamic sealing on rotating shafts, differing from the static sealing principle of O-rings.
Applications: Sealing rotating shaft ends in nearly all equipment, such as motors, gearboxes, and wheel hubs. b. Composite Seals
Characteristics: Combines multiple materials or components to achieve functionality unattainable by a single seal. Common types:
Rubber-coated PTFE seals: Feature a metal or plastic skeleton core, an outer rubber layer, and a PTFE lip. Merges rubber's elasticity with PTFE's low friction and chemical resistance.
Coaxial seals (e.g., Grease Seal, Stelflex): Typically consist of an O-ring (providing elasticity) and a wear-resistant plastic ring (e.g., PTFE), used for high-pressure reciprocating motion sealing.
