Custom seals.
Machined to your spec.
Shipped fast.
Custom hydraulic and pneumatic seals, CNC machined to your spec. Send us a drawing, a set of dimensions, or just the worn-out seal. We identify it, quote it and get it CNC-machined in the material your application needs, from small batches to full production runs. One family team manages your order from start to finish.
Need something from the catalog?
- Standard sizes and profiles, in stock
- Buy online, ship today
- Kits, O-ring assortments, cylinder repair
Need it custom, in bulk, or fast?
- Non-standard dimensions or profiles
- Obsolete or unidentified seals: send the sample
- OEM production runs and blanket orders
- Machine-down emergencies
From inquiry to shipped part in four steps
No mould or tooling charges, and no waiting in a big corporation's queue. One family team owns your order from first question to delivery.
Tell us what you need
Upload a drawing, enter dimensions, or ship us the old seal. Photos help too.
Get your quote
An engineer reviews the application, recommends a material, and sends pricing and lead time.
Approve & production starts
Your seals are CNC-machined from billet stock by our specialist production partner. Need first-article samples before a full run? Just ask.
Delivered & tracked
Labeled with your part number and shipped to you with tracking. Reorder any time; your specs stay on file.
What manufacturers come to us for
Reverse engineering
Obsolete machine, no drawing, no part number? Send the worn seal. It gets measured, the profile identified and a replacement made to match.
Prototypes & first articles
Validate a new design with a small batch before committing to a full run. No mould or tooling costs.
Bulk & production runs
Repeatable runs for OEMs, with blanket orders, scheduled releases, and consistent lot quality.
Emergency repair
Machine down? Flag your request as urgent and we'll prioritize it to keep your line moving.
Large & odd sizes
Machining capacity up to 1,500 mm diameter, including sizes that catalogs simply don't carry.
50 material grades
Polyurethanes, PTFE compounds, rubbers and engineering plastics, including FDA and metal-detectable grades. We help you pick the one that will last.
The right compound for the job
Not sure which material fits? Describe your application in the quote form and we'll recommend one.
Materials
Seal types
Custom rod seals, piston seals and wiper seals, guide rings (wear rings), back-up rings, static and rotary seals for hydraulic cylinders and pneumatic equipment.
A family business that moves at your speed
Our family has worked in industrial seals for four decades, and that experience is part of our team today, behind every material recommendation and quote. Bramstrong has been family-owned since 2018, with our team in California and New York. There's no corporate approval chain between your request and a decision. When you get in touch, you reach someone who knows your order.
We treat your downtime like it's our own. We partner with an established seal manufacturer for production and take care of everything else ourselves: engineering questions, samples, quotes, follow-up and delivery.
Get a quote, send a sample, or just ask
Takes 30 seconds: your email and the size, a part number or a photo. We'll follow up on the rest.
Request received
Common questions
What's the difference between Bramstrong.com and Bramstrong Precision?
Bramstrong.com is our catalog of standard, in-stock seals and kits: order online and it ships. Bramstrong Precision is for everything the catalog doesn't cover: custom dimensions, special profiles, reverse-engineered replacements, and bulk production runs, made to order and fast.
Is there a minimum order quantity?
It depends on the seal, but it's usually around 20 pieces. Tell us what you need and we'll confirm the minimum in your quote. Seals are CNC-machined from billet stock, so there's no mould or tooling cost.
Can you make a seal from a worn or broken sample?
Yes, it's one of the most common requests we get. Register your sample in the form above, we'll email you the shipping address, ship it with the reference number, and we'll measure, identify, and quote it.
How fast is "fast"?
Production can start within 24 hours of your approval, and "machine down" requests get priority. Total delivery time depends on quantity and your location; your quote shows a confirmed date. [Edit to match your real quote and shipping times.]
Do you make the seals yourselves?
Our seals are CNC-machined by an established seal manufacturer that we partner with. We handle everything around production: engineering questions, sample intake, quoting, order follow-up and delivery. You get one point of contact who knows your order.
Will you keep my drawings confidential?
Always. Your drawings are used only to make your parts, and we'll sign your NDA before you share anything sensitive.
Can I set up recurring or blanket orders?
Yes. We keep your part numbers and specs on file, so reordering is just a quantity and a date.