Sealing

Marine gaskets, O-rings and sealing kits

Gaskets are the cheapest part on the engine and the most common cause of a leak that stops a survey. We supply cylinder cover and manifold gaskets, O-ring kits, mechanical seals and jointing sheet in the materials your system needs.

Send your part list How sourcing works

Single unit or complete kit
OEM and verified alternatives
Certificate with shipment
Quotation in one business day

Components

What we supply

Most sealing failures are a material problem, not a quality problem: NBR where the temperature calls for FKM, or a fibre gasket on a surface that needs a steel ring. When you send an enquiry, tell us the medium and the temperature, and we will confirm the material before the size.

Component	Function	Supply notes
Cylinder cover gasket	Seals the combustion space and water jacket	Steel ring or composite, per OEM thickness
Exhaust manifold gasket	Seals high-temperature joints	Graphite or steel, with expansion allowance
O-ring kit	Seals covers, flanges and fittings	NBR, FKM, PTFE; kit or individual sizes
Mechanical seal	Pump shaft sealing	Single or double, carbon / SiC / TC faces
Gland packing	Valve stem and pump gland sealing	PTFE, graphite, aramid
Spiral wound gasket	High-pressure flange joints	SS316 windings with graphite filler
Jointing sheet	Cut gaskets on board	Compressed fibre, in sheets
Seal and gasket kit	Scheduled maintenance sets	Built to the manual page you send

Specification

Typical range and what ships with the part

Temperature range

Up to 550°C for exhaust joints, depending on material

Materials

NBR, FKM, PTFE, graphite, compressed fibre, SS316

Standards

Dimensions to DIN, ANSI or OEM drawing

Certificates

Material certificate on request (non-asbestos declaration as standard)

Supply form

Individual gasket, O-ring kit or full maintenance kit

Lead time

Stock items 3–10 days; cut to drawing 2–3 weeks

To quote accurately

What we need from you

1. Engine make and type
For example MAN B&W 6S50MC-C, or Wärtsilä 6L32.
2. Part number
From the manual, the invoice, or stamped on the old part.
3. Quantity and destination
One unit or a set, and the port or city for delivery.
4. A photo, if the number is gone
The worn part, the nameplate or a drawing with dimensions.

No part number? That is common on older engines. Send the bore, the overall length and a photo and we will work from that.

Questions

Before you enquire

Can you cut a gasket to a drawing?

Yes, including non-standard shapes and thicknesses. Send a dimensioned drawing or a tracing of the old gasket; a photograph with a rule alongside works for simple shapes.

Which material for a high-temperature exhaust joint?

Graphite-based or steel with a graphite facing, depending on the flange design and the movement at the joint. Fibre sheet will burn out on an exhaust manifold; that is the failure we see most.

Do O-rings come as a kit or individually?

Both. Kits are built by engine type and cover the common cover, flange and fitting sizes. Individual sizes are quoted from the inside diameter, cord thickness and material.

Other systems we supply

Request a quotation

Tell us what you need

One part number is enough to start. Drawings, photos and nameplate details all help us confirm the match.

What to include: engine make and type, part number (if known), quantity, and the port or city you need it delivered to. A photo of the nameplate or the worn part is often faster than a part number.

Tell us what you need

We reply by email, usually within one business day.