Odessa, Texas
Sales (432) 381-7621
Ball & Seat Specialties Co.
API Ball & Seat Specialties

API-certified ball and seat
materials, from one source.

Ball & Seat Specialties Co. is an API Certified Specialties Company supplying ball and seat materials for valve and check-valve service — every standard material identified by its API symbol.

From API A1 stainless steel through the B and C series cobalt alloys and carbides, to silicon nitride and zirconia ceramic, we stock the material your specification calls for.

Quick reference
ApplicationsValves, check valves, ball & seat sets
Material families7
GradesAPI standard grades
MinimumsQuoted per order
Since 2005
Two decades of API-certified ball & seat supply
API certified
Standard materials to API symbol specification
7 families
Stainless, cobalt alloy, carbide and ceramic
Products

Select a material family

Each family page lists size range, grade specifications and standard grade for every alloy we carry.

View all products →
A1
Stainless Steel
API A1 — the standard corrosion-resistant ball and seat material.
Ball 52 – 56
Seat 52 – 56
B1B2
Cobalt Alloy
API B1/B2 — cast or powder metal, for wear and corrosion service.
Ball 53 – 63 RC
Seat 50 – 57 RC
C1
Tungsten Carbide
API C1 — tungsten carbide with a cobalt binder.
Ball 88 – 89.0 RA
Seat 88.0 – 89.5 RA
C2
Nickel Carbide
API C2 — tungsten carbide with a nickel binder.
Ball 89 – 90.5 RA
Seat 87.5 – 89 RA
C3
Titanium Carbide
API C3 — tungsten and titanium carbide with a cobalt binder. Ball only.
Ball 89.0 – 90.5 RA
Seat Not offered
Si3N4
Silicon Nitride
Non-metallic ceramic ball and seat material.
Hardness 88.0 – 89.0 RA
Mg-PSZ
Zirconia Ceramic
Magnesia partially-stabilized zirconia ceramic.
Hardness 80 – 84 RA
Company

API-certified ball and seat materials

Ball & Seat Specialties Co. supplies API-certified ball and seat materials across stainless steel, cobalt alloy, carbide and ceramic families for valve and check-valve service.

Every standard material is identified by its API symbol, with ball and seat hardness specified to the same standard our customers already order against.

API certifiedBall & seat sets

Tell us what you need.
We will quote it by phone.

Orders and credit card payments are handled directly with our sales desk — no forms, no waiting on an email reply.

Sales & quotes (432) 381-7621
Hours
Monday – Friday, 8:00 – 5:00 Central