ISO 9001 Certified Supply / 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
ISO 9001
Certified quality system
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 certifiedISO 9001 quality systemBall & seat sets
ISO 9001 Certified

Quality certification documents are available on request — call our sales line and we will send your copy the same day.

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