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SEALGUARD
Mechanical Seals

Balanced Seals

High-pressure high-speed face seal

A pressure-balanced mechanical seal that reduces face load and heat generation for high-pressure, high-speed and volatile-liquid duty.

  • Reduced face load controls heat at high pressure
  • Handles high speeds and volatile light liquids
  • Resists film flashing and face distortion
  • Lower friction extends face life
  • Available as component or cartridge build
Add to QuoteView Datasheet
Temperature
-40°C to +260°C (elastomer) / +400°C (metal bellows)
Pressure
Up to 60 bar (balanced)
pH range
0 – 14
Balanced mechanical seal showing the stepped sleeve and silicon-carbide faces
Mechanical SealsREF · balanced-seal
Technical DatasheetSPEC

The numbers, on the record

Every figure below is the specification we hold ourselves to — material, service envelope, media compatibility and conformance. Download it as a standalone document for your dossier.

SealGuard

Technical Datasheet

Doc No.
DS-BALANCED-SEAL
Revision
Rev. A
Issue
2026-Q3
Class
Mechanical Seals

Balanced Seals

High-pressure high-speed face seal

01

Material & Construction

Silicon-carbide or tungsten-carbide balanced faces; FKM / FFKM seals; Alloy hardware

02

Service Envelope

Temperature range-40°C to +260°C (elastomer) / +400°C (metal bellows)
Pressure ratingUp to 60 bar (balanced)
pH range0 – 14
03

Media Compatibility

Light hydrocarbonsLPGHot oilsSolventsWater
04

Dimensions & Sizing

Shaft Ø16–100 mm · metric & inch · EN 12756 · API 682

05

Standards & Conformance

  • API 682
  • EN 12756 (DIN 24960)
  • ISO 21049
06

Certifications

  • ISO 9001
  • API 682 compliant
  • ATEX (on request)
07

Additional Specifications

Balance ratio≈ 0.7–0.8
Surface speedUp to 30 m/s
Face combinationSiC/SiC or TC/carbon
BuildComponent or cartridge

Data is typical and for guidance only — confirm suitability against your service conditions. Balanced Seals · DS-BALANCED-SEAL · Rev. A.

Specify & QuoteORDER

Build your line item

Choose the material grade and size that match your duty, set a quantity, and add a fully-specified line to your quote. No prices, no obligation — our engineers confirm specification and lead time on every enquiry.

01

Material grades

  • SiC vs SiC faces
  • Tungsten carbide vs carbon faces
  • Diamond-coated SiC faces (severe duty)
  • FKM / FFKM elastomers
  • 316 / Alloy C-276 hardware
02

Sizes & configurations

  • Shaft Ø16–100 mm
  • Metric (EN 12756)
  • Inch shaft sizes
  • Component or cartridge build
  • Multi-spring balanced design
  • OEM dimensional equivalents
Configure your lineRFQ

In ServiceUSE

Where it holds the line

As seal-chamber pressure climbs, an unbalanced seal pushes its faces together harder than they can dissipate heat — and the film breaks down. The balanced seal solves this by stepping the sleeve so hydraulic pressure acts on a reduced face area, cutting closing force, friction and heat. That makes it the right choice for high-pressure boiler-feed, high-speed and light-hydrocarbon services where flashing and face distortion would destroy a standard seal, delivering stable performance with a long, predictable life.

Typical applications

  • 01High-pressure boiler-feed pumps
  • 02Light-hydrocarbon and LPG service
  • 03High-speed process pumps
  • 04Hot-oil and thermal-fluid pumps
  • 05Hydrocarbon pipeline pumps

Industries served

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Specify this seal for your service.

Send us the media, temperature, pressure and motion for your duty and our engineers will confirm the right material grade, size and standard for your application.

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