PRODUCTS
LY9DZSS
API Standard 682 seal
Mechanical seals for pumps
Metal bellows seals
- Compact design
- Bellows design allows use of balanced seal with plain sleeve
- Absence of dynamic O-Ring eleminates/reduces seal face hang-up
- Bellows design minimizes variation in face load due to shaft expansion or face wear
- Resistant to abrasive particles in the medium,no shaft or sleeve fretting
- Low heat generation and power consumptiondue to narrow seal face width
- Longer seal life
Feature
- API 682 Category 2 and 3, Type B, Arrangement 3 seal
- Dual seal in back-to-back arrangement
- Same seal size of inboard and outboard seal
- Balanced
- Cartridge unit
- Rotating metal bellows
- Shrink fitted seal ring and solid mating ring
Product specification example
Standards and approvals
API 682 / ISO 21049
Materials
Seal ring: Blister resistant carbon
Mating ring: Silicon carbide SSiC (Q1), RBSiC (Q2)
Bellows: Hastelloy® C-276 (M5), option: Inconel® 718 (M6)
Secondary seals: FKM (V), FFKM (K), EPDM (E), NBR (P)
Metal parts: CrNiMo steel 316 (G)
Operating range
Pressure: p = vacuum … 20 bar (290 PSI)
Temperature: t = -40 °C … +200 °C (-40 °F … +392 °F)
Sliding velocity: vg … 23 m/s (75 ft/s)
Viscosity: … 1,000 mPas
Solids content: … 0.5 wt.%
Recommended applications
Refining technology
Oil and gas industry
Petrochemical industry
Chemical industry
Power plant technology
LPG plants API 610 / ISO 13709 pumps
Process pumps
Recommended piping plans
Process side: 02, 11, 12, 13, 14, 21, 22, 31, 32, 41
Between seals: 53A, 53B, 53C, 54
Atmospheric side*: 61, 62, 65A, 65B
* Throttle bushing on request
Applicable ranges, performance data and figures can serve only as a guide for selection and therefore in actual use there will be some cases where general specifications cannot be applied due to unknown factors or constraints.
Please check the applicability before use.
The contents are subject to change without notice for improvement.
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