Beyond the part number.
Into the problem.
PROBLEM
→ 02 INSIGHT
→ 03 SYSTEM
→ 04 OUTCOME
The right seal starts with understanding what your application demands.
Pressivon — precision sealing solutions. 54 mapped products, 7 families. Homepage routes intent, catalog decides fit, engineering confirms before quotation.
150 bar @ 300°C → Elastomer + face re-map required
Why seals fail in real life (not catalog)
PROBLEMWrong elastomer for media
Viton that swells in amine, EPDM that degrades in oil, FFKM where PTFE would do. Brochure says 'chemical resistant' — but which chemical, at what temperature? We saw this cause 60% of early failures in waste and chemical plants.
Box pressure ≠ system pressure
System shows 12 bar, but seal chamber sees 18 bar with dead-ended flush. Or suction pressure plus dynamic head misread as static. Single-spring seal quoted where balanced double was needed.
Flush plan missing
Dry-running faces in clean water because Plan 11 wasn't piped. Coking in hot oil at 350°C because no cooler. Vapor locking in light hydrocarbons. The seal was fine. The system around it wasn't.
Insight — anyone can ship a catalog number
In B2B plants, downtime costs more than the seal. We learned that shipping fast but wrong creates two shipments — one out, one back. Shipping once after review creates zero returns.
So we invert the flow. Instead of “give us part number → we ship”, we ask for four things. Every time. Even if you know exactly what you want. Especially then.
What we are — Built around the application
SYSTEMWe start with equipment and conditions, not a part number. That’s why the families exist. ME, CA, SP, BE, AG, SU, SX — each built for a different job, not a different shelf.
Mechanical Seals
Ø14–100mm • Single / Multi-spring
Workhorse range. Most plant calls land here.
Cartridge Seals
Single / Double • API balanced
Pre-assembled, error-resistant.
Split Seals
No dismantling • Pumps / Mixers
When shutdown window is short.
Bellows Seals
Metal & Elastomer • High integrity
Covers LNG −120°C to hot processes.
Agitator Seals
Top / Bottom entry • Reactors
Reactor duty, not pump duty.
Support Systems
API 682 Plans • Reservoir / Cooler
Flush plan is not optional.
Specialty
Dry-run / High-temp / Slurry / Custom
When standard families don't fit.
How we work — four ways in, one honest path out
I know the seal →
You have a reference, drawing, or old tag. We still verify box, shaft, and conditions — we don't re-ship a number.
I know the equipment →
Pump / mixer / reactor model + shaft Ø. We route to families based on chamber and duty.
I know the industry →
Water, oil, chemical, power, food — duty tells us risk. Hot oil coking, slurry abrasion, LNG contraction all need different mapping.
I don't know — photo →
Send what you have. Photo of installed seal, leak path, box. That's often more useful than a part number.
Sales checks completeness. If incomplete, auto-ack + checklist. If photo blurry, we ask for scale.
Engineering checks materials, faces, elastomer, box. Not just price match.
Only then: quotation with alternatives if needed. Checked fit, not catalog number.
Limits are
combinatorial.
Not brochure max.
We don’t stack maxima from different columns. We check intersection: Pressure ∩ Temperature ∩ Media ∩ Speed. That’s engineering review — not marketing.
- Box pressure can exceed system pressure with dead-ended flush
- Temperature moves elastomer limits — Viton 200°C ≠ 300°C
- Solids content changes face choice — SiC needed, not Carbon
- Speed changes PV, heat — faces and flush must adapt
Industries — 9 covered, same review
9 INDUSTRIESHave existing seal?
Don’t know exact
replacement? That’s okay.
No seal ships without review. Engineering review 100% — even for 1 pc. No spam, no fake stock promises. We review info, follow up only with what engineering needs.
Send what you have — photo, model, box dimensions, failure mode. We don’t need perfect data. We need enough to check intersection. No stock theater, no catalog-number guessing.