Independent machinery sourcing · Handover

mechanical seal

Mechanical Seal Sourcing is an independent sourcing partner for US buyers who need a mechanical seal matched to a named pump or mixer. Share shaft and seal-chamber dimensions, fluid, solids, quantity and destination so we can request comparable factory wholesale quotes. This site does not sell from stock and does not claim original-equipment identity. A published temperature, working pressure or surface speed is not a simultaneous operating point until the manufacturer states those limits together for the proposed arrangement.

Pump seal chamber with cartridge mechanical seal on a process skid Request Factory Quotes

Included and separately quoted

Ask every mechanical seal bidder to split the rotating assembly from items that change installed project cost. Gland plates, sleeves, mating rings and flush piping are frequent extras. Without that split, two quotations cannot be compared on the same bill of material. We collect those lines so you can see hardware price versus installed project cost, not a single undifferentiated number. Read how a bare seal differs from a complete replacement scope.

Base machine

  • Seal cartridge or rotating assembly described in the offer, limited to the shaft and chamber envelope named in the RFQ.
  • Standard hardware for one face pair and elastomer family; additional sizes, quench bushings and barrier-fluid kits stay outside the base line unless listed.

Where the seal sits in the process

Base machine

  • The quotation should name whether the duty is a centrifugal pump mechanical seal, mixer, or another rotating machine, because chamber geometry is not interchangeable.
  • Standard tooling here means the setting clips, gland gaskets and one flush connection shown on the drawing, not an entire support system.

What should a buyer confirm when requesting mechanical seal?

Which procurement scope is covered by mechanical seal, and what shaft and seal-chamber dimensions must the cartridge fit?

Machine

Cartridge or component set, face pair, elastomer, springs, gland plate and sleeve as named on the chamber drawing. Do not assume a Type 21 elastomer-bellows limit set applies to a 5610 single-cartridge O-ring pusher.

Delivery

Packed quantity, destination US state or country, Incoterms if already chosen, and whether flush piping ships loose. Export packing is not implied.

Site

Installation, alignment, flush-plan hook-up, cooling water and SAT on the buyer fluid. Those lines belong on the quote only when written.

No numerical saving claim without comparable quotations.
Which responsibilities remain with the equipment supplier and buyer?

The buyer supplies the fluid, solids, upset temperatures and chamber drawing. The named manufacturer confirms feasibility and states pressure, temperature and surface speed with their conditions. Mechanical Seal Sourcing coordinates comparable replies; engineering acceptance stays on the purchase contract. Selection notes start with the fluid and chamber, as in this procurement article.

Request factory wholesale quotes

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