Manufacturer: Eagle Industry Co., Ltd.
Model: LL9DTUU

Features

• API 682 Category 2 and 3, Type A,　Arrangement 2 and 3 seal
• Dual seal in face-to-back arrangement
• Same seal size on inboard and outboard seal
• Balanced
• Cartridge unit
• Rotating multiple springs
• Solid seal faces

Specification

Standards and approvals

• API 682 / ISO 21049

Materials

• Materials Seal ring: Blister resistant carbon, Silicon carbide SSiC (Q1), RBSiC (Q2)
• Mating ring: Silicon carbide SSiC (Q1), RBSiC (Q2)
• Secondary seals: FKM (V), FFKM (K), EPDM (E), NBR (P)
• Springs: Hastelloy® C-276 (M5)
• Metal parts: CrNiMo steel 316 (G)

Operating range

• Pressure: p = vacuum … 42 bar (… 609 PSI)
• Temperature: t = -40 °C … +176 °C (-40 °F … 349 °F)*
• Sliding velocity: vg … 23 m/s (… 75 ft/s)
• Viscosity: … 300 mPa·s
• Solids content: … 0.5 wt.%
• * Engineered up to 260 °C (500 °F) with FFKM (K) secondary seals

Recommended applications

• Refining technology
• Oil and gas industry
• Petrochemical industry
• Chemical industry
• Power plant technology
• Light volatile hydrocarbons
• LPG plants API 610 / ISO 13709 pumps
• Process pumps

Recommended piping plans

• Process side: 02, 11, 12, 13, 14, 21, 22, 23, 31, 32, 41
• Between seals: 52, 53A, 53B, 53C, 54, 55
• Atmospheric side*: 61, 62, 65A, 65B
• * Throttle bushing on request.