Burks 2257 N-8092 Sheet Case Gasket 6.50 in
The Burks 2257 is the genuine Burks case gasket, 6.50 in. A flat gasket of this kind crushes slightly as the joint is drawn together, flowing into the tooling marks on both faces so that neither liquid nor air can find a path through.
Age hardens the gasket material and the joint loses its seal. On a self-priming pump a hardened case gasket also lets air in, so the pump becomes slow to prime or loses prime between runs - a symptom that gets blamed on the foot valve far more often than on a few pence worth of gasket.
Both faces need to be genuinely clean before the new gasket goes on. Old material has to be scraped off without gouging the casting, and a scratch across the sealing land will leak no matter how good the gasket is.
Key Features
- Genuine Burks replacement case gasket
- 6.50 in
- Direct replacement for the original Burks gasket
- Sets the correct axial spacing across the joint
- Seals against both liquid loss and air ingress
- Renew at every teardown to avoid a repeat strip-down
Applications
- Burks pump service and overhaul
- Reassembly after an impeller or seal replacement
- Curing a weep along a casing joint
- Restoring priming on a pump that has become slow to prime
- Planned maintenance spares kits
- Industrial, marine and dockside pump installations
Specifications
- Brand: Burks
- Manufacturer: Crane Pumps and Systems
- Manufacturer Part Number: 2257
- Part Type: Case Gasket
- Material: N-8092 sheet
- Size: 6.50 in
- Condition: New
Frequently Asked Questions
Q: How long do these last in normal service?
The gasket usually outlives the parts around it, so most are replaced because something else was opened rather than because they failed. Treat one as a consumable to be renewed whenever the joint is broken.
Q: Do I need gasket sealant as well?
Normally no. These gaskets are designed to seal dry against clean, flat machined faces, and a heavy bead of sealant can hold the joint apart or squeeze inside and break off into the pump. A thin film to hold the gasket in place during assembly is as far as most fitters go.
Q: How do I get the old gasket off without damaging the casting?
Soften it first, then use a plastic or brass scraper and work flat against the face rather than digging in. Steel blades and rotary wire wheels leave scratches across the sealing land that no new gasket will bridge.
Q: Can I cut my own from sheet material?
You can make something that holds pressure, but you will be guessing at thickness and compressibility. Since the thickness sets the spacing across the joint, a home-cut replacement can alter internal clearances in ways that only show up as lost performance.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct case gasket before you order.
CLRMarine
