Gaskets & seals. Fluid containment. Leak-tight.
Gaskets and seals reference. O-rings, flat gaskets, lip seals, mechanical seals. Material selection, surface finish, design considerations.
Gaskets and seals
O-ring: round cross-section in groove. Flat: between mating flanges. Different applications.
Key principles.
AS568 standard
Standard sizes per AS568. Wide application range.
Compressed
Gasket between flanges. Compressed for sealing.
Rotating shafts
Spring-loaded lip seal. For rotating shaft seals.
Pumps
Rotating mechanical seals. Pump shaft sealing.
Oil-resistant
Standard oil-resistant. Fuel hoses, hydraulic.
Premium
Chemical + heat resistant. Premium applications.
FAQ
NBR oil. EPDM water/weather. Viton chemical/heat. Silicone temperature range.
O-ring: round cross-section in groove. Flat: between mating flanges. Different applications.
Ra 0.8-1.6 µm typical. Smoother seals better but wears faster (dynamic).
Static: stationary mating. Dynamic: rotating/sliding. Different design rules.
15-30% O-ring compression. Higher = better seal but accelerated wear.
Material recovery. Lower = better seal life. Silicone, Viton best.
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