Mechanical Seal 20mm Shaft Carbon/SiC/EPDM
Pricing
Request a quote
We reply within 24 hours
Product Description
John Crane SEAL-MECH-20 Mechanical shaft seal 20mm, single spring type. Carbon vs Silicon Carbide faces with EPDM elastomers. Universal replacement for centrifugal pumps. Used across marine engine-room, cargo transfer, ballast, bilge, cooling and process fluid transfer duty.
Technical Specifications
- Material
- Carbon/SiC/EPDM/SS316
- Standard size
- 20mm Shaft
- Pressure rating
- 12 bar
- Temperature range
- -20C to +120C
- Approval
- API 682 4th Edition, ISO 21049, ATEX, CE, FDA 21 CFR 177.2600 (elastomer variants)
- Standards
- API 682, ISO 21049, EN 12756
- Approvals
- CE, ATEX
- HS code
- 8484.20
Standards & Compliance
- Size / Series
- 20mm Shaft
- Material
- Carbon/SiC/EPDM/SS316
- Pressure Rating
- 12 bar
- Temperature Range
- -20C to +120C
- Classification / Approval
- API 682 4th Edition, ISO 21049, ATEX, CE, FDA 21 CFR 177.2600 (elastomer variants)
- HS Code
- 8484.20
Compatibility & Fitment
Part number shown for quick reference. Fits listed model. For other models or if unsure, contact us with pump type and serial number to verify compatibility.
Product Documentation
More in Pumps
John Crane
Mechanical Seal 25mm Shaft Carbon/SiC/Viton
SEAL-MECH-25-FKM
John Crane
Mechanical Seal 35mm Shaft Carbon/SiC/EPDM
SEAL-MECH-35
Jabsco
Pump Wear Ring Bronze 85X65X25MM
WR-BR-85x65x25
Grundfos
Grundfos CR Shaft Seal Kit HQQV 22mm
96525490
Rule
Bilge Pump Submersible 12VDC 1100 GPH
BILGE-1100GPH-12V
Rule
Bilge Pump Float Switch 12/24VDC
35A
DESMI
NSL 40-160 In-Line Centrifugal Pump
NSL40-160
DESMI
NSL 50-200 In-Line Centrifugal Pump
NSL50-200
Catalogue entry last verified: 2026-08-20. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy SEAL-MECH-20?
- SEAL-MECH-20 can be ordered from cballast.com as a John Crane catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this John Crane product?
- The manufacturer part number is SEAL-MECH-20.
- What is the HS code for SEAL-MECH-20?
- The customs tariff (HS) code for SEAL-MECH-20 is 8484.20.
- Who manufactures SEAL-MECH-20?
- SEAL-MECH-20 is a John Crane product in the Pumps range.
- Is a datasheet available for SEAL-MECH-20?
- Yes — the SEAL-MECH-20 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for SEAL-MECH-20?
- The minimum order quantity is 1.
- Is SEAL-MECH-20 available?
- Yes — SEAL-MECH-20 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).