Double lip seal 70

circularmetalpolymer

Overview
Omniseal® Series 70, 80 and 90 rotary lip seals feature double-lip designs for high-pressure and high-speed rotary applications. Configurations include a primary threaded lip and a secondary sealing lip for lubricated environments, providing enhanced leakage control and extended maintenance intervals.

Series details

• Series 70: rated for pressures up to 400 PSID with lubricating media and speeds up to 3,500 ft/min. Maximum PV examples: 300,000 (lubricated), 50,500 (non-lubricated).
• Series 80: optimized for lubricated systems at high speeds (up to 4,500 ft/min) and pressures up to 250 PSID; designed for clockwise shaft rotation when viewed from the atmosphere side. Maximum PV example: 200,000 (lubricated).
• Series 90: identical to Series 80 but for counterclockwise shaft rotation when viewed from the atmosphere side.

Applications and performance
These high-performance polymer rotary lip seals commonly replace elastomer lip and carbon face seals in equipment such as air and refrigeration compressors, hydraulic motors, pumps and vacuum pumps. Design evolution targets zero leakage and long service life; in some installations Omniseal polymer lip seals can provide maintenance-free operation exceeding 40,000 hours under recommended conditions.

Standard Specifications

• Materials: metal outer case; high-performance polymer compounds (material selection by design engineers).
• Typical uses: hydraulic motors, pumps, hydrostatic transmissions, high-pressure hydraulic equipment, air compressors, refrigeration compressors, vacuum pumps.
• Temperature range: -50°C to +200°C (-58°F to +392°F).
• Pressure: up to 28 bar.
• Maximum speed: up to 30 m/s.
• Dimensions (metal cased): shaft sizes 6–330 mm; bore sizes 16–380 mm.
• Minimum machining tolerances: shaft ±0.003 in; bore ±0.001 in.

Technical features

• Design: double-lip rotary shaft seal with optional primary threaded lip plus secondary sealing lip for lubricated conditions.
• Available series: 70 (highest pressure capability), 80 (high-speed clockwise), 90 (high-speed counterclockwise).
• PV limits (examples): Series 70 up to 300,000 (lubricated) / 50,500 (non-lubricated); Series 80 up to 200,000 (lubricated).
• Operating temperature: -50°C to +200°C.
• Maximum pressure rating: up to 28 bar (site dependent).
• Maximum shaft speed: up to 30 m/s; series-specific speeds also noted in ft/min in series details.
• Shaft range (metal cased): 6–330 mm; bore range (metal cased): 16–380 mm.
• Typical applications: hydraulic and pneumatic rotating equipment, compressors, vacuum pumps.