Berkeley Mechanical Seals

Berkeley BVM 10/15/20 Mechanical Seal16mm Cartridge Seal (B86598 / B86599)

The Berkeley B86598 mechanical seal is a direct-fit 16mm cartridge seal for Berkeley BVM 10, BVM 15 and BVM 20 vertical multistage pumps. It drops in without dismantling the pump. This is the Viton build, matching Berkeley B86599, with silicon carbide faces on both sides. Cross-references to Aurora 476-1493-646. Built to OEM-equivalent standards or higher.

What You Get

One complete 16mm cartridge seal assembly, silicon carbide faces with Viton elastomers

Cross References & FitmentFind your pump brand, then match the number on your old seal or your pump nameplate.

Pump Brand	OEM Part No.	Pump Models & Notes
Berkeley	B86599	BVM 10, BVM 15, BVM 20 — the Viton build. This is what we supply
Berkeley	B86598	BVM 10, BVM 15, BVM 20 — the EPDM build. Same seal, different elastomer. See the note below
Aurora	476-1493-646	Aurora equivalent part number for the same 16mm seal

Specification: 16mm shaft · single cartridge seal · Silicon Carbide / Silicon Carbide faces, Viton (FKM) elastomers · BVMX is the 316 stainless version of the same pump · supplied as a seal assembly, [____ — confirm whether O-rings are included]Not sure this is your seal? Call or text a photo of your pump nameplate to 561-414-1046 — no purchase required.

Viton or EPDM — which one does your system need?

Berkeley builds this seal both ways, and the faces are silicon carbide in either case. The elastomer is the only difference, and it is not a straight upgrade in one direction. Viton (FKM), the build we supply, is the better choice for oils, fuels, solvents and most chemical service. EPDM is the better choice for hot water above roughly 200 F and for glycol or antifreeze systems, where Viton is the weaker material. If your pump runs hot water or glycol, call us before ordering and we will tell you what we can source.

Applications

Pressure boosting for light commercial buildings and farms
Irrigation and sprinkler systems
Reverse osmosis and filtration feed
Water transfer and tank filling
Washdown and general clean-water service

Rebuilding this pump?A seal change is the right time to replace the soft parts that come out with it.

New to this? Read how to replace a mechanical pump seal.

Weight	.5 lbs
Dimensions	2 × 2 × 2 in

Berkeley BVM 33-150 Mechanical Seal22mm Cartridge Seal (B86600)

The Berkeley B86600 mechanical seal is a direct-fit 22mm cartridge seal for Berkeley BVM 33-150 series vertical multistage pumps, 5 to 60 HP. It drops in without dismantling the pump, and cross-references to Aurora 476-1494-646. Built to OEM-equivalent standards or higher.

What You Get

One complete 22mm cartridge seal assembly

Cross References & FitmentFind your pump brand, then match the number on your old seal or your pump nameplate.

Pump Brand	OEM Part No.	Pump Models & Notes
Berkeley	B86600	BVM 33, BVM 45, BVM 64, BVM 90 — BVM 33 through 150 series, 5 to 60 HP. BVMX is the 316 stainless version of the same pump
Aurora	476-1494-646	Aurora equivalent part number for the same 22mm seal

Specification: 22mm shaft · single cartridge seal ·Not sure this is your seal? Call or text a photo of your pump nameplate to 561-414-1046 — no purchase required.

Applications

Commercial and municipal pressure boosting
Irrigation and large sprinkler systems
Boiler feed and condensate return
Reverse osmosis and filtration feed
Water transfer, washdown and general clean-water service

Running an Aurora pump instead?This is the same 22mm seal, listed separately under the Aurora number.

New to this? Read how to replace a mechanical pump seal.

Weight	.25 lbs
Dimensions	2 × 2 × 2 in