Description
Hynautic KS-07 - Seal Kit for K-10 Cylinder
KS-07 is the genuine Hynautic cylinder seal kit for resealing the K-10 inboard steering cylinder. This kit is discontinued. If you cannot source a kit or your cylinder has internal wear, we recommend our Hynautic cylinder rebuild service.
Compatibility
- Fits: Hynautic K-10 cylinder
- Status: Discontinued - limited availability may apply
- How to confirm: Check the cylinder’s stamped model on the end cap or barrel. If unsure, contact Tech Support with photos.
What’s Included
- Seal and O-ring set for one K-10 cylinder (as applicable)
- Rod wiper(s) and backup rings (as applicable)
- Additional O-rings for glands/ports (as applicable)
Note: Contents can vary slightly by cylinder revision. Reuse of hard parts is expected unless damaged.
Related Hynautic Cylinder Seal Kits
| Part No. | Fits Cylinder(s) | Notes |
|---|---|---|
| KS-07 | K-10 | Discontinued |
| KS-08 | K-7 | Discontinued |
| KS-19 | K-6 | Discontinued |
| KS-01 | K-11, K-12 | Small inboard |
| KS-02 | K-18, K-19, K-20 | Ball bracket style |
| KS-03 | K-2, H-100 | Discontinued |
| KS-12 | K-2(B) | K-2 variant |
| KS-04 | K-21 to K-29 (pre-1983) | Early cylinders |
| KS-06 | K-21 to K-29 (post 1983) | Later cylinders |
| KS-05 | K-31 | Fixed mount cylinder |
| KS-13 | K-3 (prior to 4-15-94) | Older K-3 |
| KS-14 | K-51 | Large inboard |
| KS-11 | K-1 | Single-cylinder kit |
Install Overview - Resealing a Hynautic Cylinder
This is a high-level overview to help you plan the job. Follow the Hynautic service manual for exact steps and specs.
- Prep - Clean the exterior, secure steering, and mark current hardware locations. Protect the rod from scratches.
- Disassemble - Depressurize the system. Remove retaining wire(s) and end cap per the manual. Withdraw rod and piston assembly.
- Inspect - Check the rod surface for nicks and the bore for scoring. Replace damaged hard parts before reseal.
- Reseal - Replace O-rings, backups, and wipers from KS-07. Lightly lubricate seals with compatible hydraulic fluid.
- Reassemble - Install rod assembly, seat end cap, and re-fit retaining wire(s). Verify smooth travel by hand.
- Bleed and test - Refill, bleed air, and verify full stroke without binding or leaks. Sea trial under safe conditions.
Tip: If the rod is pitted or the bore is scored, a reseal may not hold. Consider our Hynautic cylinder rebuild service.
Downloads and Resources
| Description | Link |
|---|---|
| Hynautic Steering System Manual - general reference | LINK [PDF] |
| Hydraulic Cylinder Installation and Reference Guide | LINK [PDF] |
| Hynautic Cylinder Rebuild Service | LINK [Service] |
Questions?
- Tech Support: Tech Support Page
- Check Stock: Stock Inquiry Page
- Request a Shipping Quote: Request Quote Page
- Learn More About Seatech: About Us Page
- No Sales Tax on purchases outside California
- Buy Now Pay Later with Affirm or PayPal
- FREE Ground Shipping to the Lower 48 States
- Seatech Marine Products, Inc. is an authorized dealer, service center and installer for Hynautic
International, USVI, Puerto Rican, Hawaiian and Alaskan Customers: We ship worldwide and via USPS. If shipping looks high, contact us for a quote.
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