Robust clog-resistant pump sealSingle Spring Seals
A conical single-coil mechanical seal whose large open spring resists clogging, ideal for dirty, viscous and general-service pumps.
- Temp
- -40°C to +200°C
- Pressure
- Up to 16 bar
SERIES 04 / 0805 product lines
Mechanical Seals
Single, multi-spring, balanced and cartridge mechanical seals that replace packing on pumps and mixers for near-zero emissions and long MTBF.
Dynamic end-face seals for rotating gearSERIES 04 / 08
Capabilities
Performance envelope
Where leakage limits, emissions rules or product purity rule out packing, a mechanical seal is the answer — and SealGuard builds them around your pump, not a generic frame. Lapped seal faces in carbon, silicon carbide or tungsten carbide run on a precise hydraulic film; balanced designs handle higher pressures and speeds; and pre-set cartridge units drop in without setting measurements or operator guesswork. The payoff is dramatically lower fugitive emissions, longer mean time between repairs and predictable, plannable maintenance.
Operating LimitsMechanical Seals
- Temperatureθ · °C
- -40°C to +400°C (metal bellows)
- PressureP · bar
- Up to 40 bar (balanced / cartridge)
- Size RangeDN · ⌀
- Shaft Ø10–100 mm · EN 12756 / API 682
- MaterialsMAT
- Carbon, SiC, tungsten carbide faces; FKM / EPDM / FFKM elastomers; 316 / Alloy hardware
Product Range05 LINES
Mechanical Seals lines
Browse the mechanical seals range, compare the headline limits, and add candidates straight to your quote request.
Robust clog-resistant pump sealCompact even-load process sealMulti Spring Seals
A multi-spring mechanical seal delivering uniform face load in a short axial envelope for clean process pumps and tight seal chambers.
- Temp
- -40°C to +220°C
- Pressure
- Up to 25 bar
Pre-set drop-in seal assemblyCartridge Seals
A fully pre-assembled, pre-set cartridge seal that fits without setting measurements — slashing change-out time and installation error.
- Temp
- -40°C to +260°C
- Pressure
- Up to 40 bar (balanced)
High-pressure high-speed face sealBalanced Seals
A pressure-balanced mechanical seal that reduces face load and heat generation for high-pressure, high-speed and volatile-liquid duty.
- Temp
- -40°C to +260°C (elastomer) / +400°C (metal bellows)
- Pressure
- Up to 60 bar (balanced)
OEM rotary & stationary componentsComponent Seals
Individually supplied rotary and stationary seal components for OEM assembly and economical like-for-like replacement.
- Temp
- -40°C to +200°C
- Pressure
- Up to 16 bar
Specification Guidance
Getting the spec right
Field-tested guidance from our engineers on specifying mechanical seals for demanding service.
- Note 01
Specify cartridge seals where setting accuracy and fast change-out drive uptime — no field measurement required.
- Note 02
Select balanced designs once seal-chamber pressure rises beyond the limit of an unbalanced single-spring seal.
- Note 03
Pair silicon-carbide faces for abrasive or marginal-lubrication duty; carbon vs SiC suits clean services.
- Note 04
Confirm elastomer compatibility (FKM, EPDM or FFKM) against the pumped medium and temperature.
Field Evidence
Proven where it matters
A reliability problem in the field, closed at the joint — and the numbers that followed.
Case StudyChemical
From six-week pump failures to a year between interventions
01
Challenge
An aggressive acid-transfer service was destroying pump seals roughly every six weeks. Each failure meant an emergency strip-down, lost batch time and a growing reliability backlog across a bank of duty/standby pumps.
02
Solution
We replaced the component seals with balanced cartridge mechanical seals running silicon-carbide faces and PTFE-encapsulated secondary seals, plus a flush plan matched to the duty. The cartridge format removed setting error on rebuild and gave the technicians a repeatable installation.
03
Result
Mean time between failures moved from six weeks to over twelve months on the lead pumps, and mean time to repair dropped because the cartridge drops straight in. The site redeployed the maintenance hours it used to spend rebuilding seals.
- 8x
- MTBF improvement
- 60%
- Lower mean time to repair
- 12+ mo
- Run length on lead pumps
Let’s specify it
Engineer out your next leak.
Send us your service conditions — media, temperature, pressure and motion — and our engineers will specify the seal that holds the line.