
Product Description
DESMI mechanical shaft seal for larger NSL models. Mechanical shaft seal for larger NSL sizes. Used across marine engine-room, cargo transfer, ballast, bilge, cooling and process fluid transfer duty.
Technical Specifications
- Approval
- DNV, ABS, LR, BV, ClassNK, KR, RINA, CCS, CE, EAC, with Standards: EN 12756 (DIN 24960), ISO 3069, DIN 24960, EN 12756 Approvals: DNV, ABS, BV, LR HS code: 8413.70
Standards & Compliance
- Classification / Approval
- DNV, ABS, LR, BV, ClassNK, KR, RINA, CCS, CE, EAC, MED
- HS Code
- 8413.70
Compatibility & Fitment
Mechanical shaft seal for larger NSL sizes. Cross-reference actual DESMI part number against T1510UK NSL spare-parts list.
Product Documentation
More from DESMI

DESMI
DESMI V-Ring Seal 703111 - NSL Series

DESMI
DESMI O-Ring Seal 706401 - NSL

DESMI
DESMI NSL 40-160 Impeller NiAlBz
IMP-40-160

DESMI
DESMI NSL 50-200 Impeller Super Duplex
IMP-50-200-SD

DESMI
DESMI NSL 80-200 Impeller NiAlBz
IMP-80-200

DESMI
DESMI NSL 100-265 Impeller
IMP-100-265

DESMI
DESMI NSL 150-265 Impeller
IMP-150-265

DESMI
DESMI Bearing Assembly 702424 - NSL
Catalogue entry last verified: 2026-08-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 704020?
- 704020 can be ordered from cballast.com as a DESMI 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 DESMI product?
- The manufacturer part number is 704020.
- What is the HS code for 704020?
- The customs tariff (HS) code for 704020 is 8413.70.
- Who manufactures 704020?
- 704020 is a DESMI product in the Pumps range.
- Is a datasheet available for 704020?
- Yes — the 704020 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 704020?
- The minimum order quantity is 1.
- Is 704020 available?
- Yes — 704020 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).
