Stainless Steel BSP Hydraulic Adapters Manufacturer & Wholesale Supplier
Hydraxio manufactures precision stainless steel BSP hydraulic adapters engineered to ISO 228 (BSPP) and ISO 7 (BSPT) standards.
Designed for high-pressure hydraulic and fluid transfer systems, our BSP adapters provide secure sealing performance through parallel thread with O-ring or tapered thread configurations.
We supply global distributors, OEM manufacturers, and hydraulic brands with consistent quality, corrosion resistance, and stable lead times.
Quick Details
Size Range: 1/8″ – 2″
Thread Type: BSPP (Parallel) / BSPT (Tapered)
Material Grades: AISI 304 / 316 / 316L / 316Ti
Sealing Type: O-ring / Bonded Seal / Metal-to-Metal
Pressure Rating: Up to 420–630 Bar (depending on size)
Standard: ISO 228 / ISO 7
OEM Service: Custom configurations & private labeling available
Types of Stainless Steel BSP Hydraulic Adapeters
Stainless steel BSP hydraulic adapters are designed for high-pressure hydraulic and fluid transfer systems. Manufactured in AISI 304, 316, and 316L stainless steel, they provide excellent corrosion resistance and reliable sealing performance in industrial and marine environments.
Available in BSPP (parallel thread) and BSPT (tapered thread) configurations to meet ISO 228 and ISO 7 standards.
BSP Male to BSP Male Adapter
Available in sizes 1/8″–2″.
Used to connect two BSP threaded hydraulic components.
BSP Male to BSP Female Adapter
Available in sizes 1/8″–2″.
Designed to convert male BSP threads to female BSP ports.
BSP Male to NPT Female Adapter
Available in sizes 1/8″–2″.
Connects BSP male threads to NPT female hydraulic ports.
Male NPT to BSP Male Adapter
Available in sizes 1/8″–2″.
Converts NPT male threads to BSP male connections.
JIC Male to BSPT Male Adapter
Available in sizes 1/8″–2″.
Connects JIC 37° flare to BSPT tapered threads.
Male JIC to Male BSPP Adapter
Available in sizes 1/8″–2″.
Adapts JIC 37° flare to BSPP parallel threads.
Male BSPP Plug
Available in sizes 1/8″–2″.
Used to seal unused BSPP threaded ports securely.
Male BSP Hollow Plug
Available in sizes 1/8″–2″.
Designed for panel-mounted BSP hydraulic connections.
Tri-clamp to BSP Male Adapter
Available in sizes 1/8″–2″.
Converts sanitary tri-clamp connections to BSP threads.
BSPP Male to BSPT Male 90° Elbow
Available in sizes 1/8″–2″.
Allows 90° connection between BSPP and BSPT threads.
BSPP Male to BSPT Male 45° Elbow
Available in sizes 1/8″–2″.
Provides 45° angle connection for BSP thread systems.
JIC Male to BSPP Male Adjustable 90° Elbow
Available in sizes 1/8″–2″.
Adjustable 90° adapter connecting JIC flare to BSPP.
Thread Size Chart of BSP Fittings
BSP (British Standard Pipe) hydraulic adapters use either parallel threads (BSPP) or tapered threads (BSPT) to achieve secure sealing performance. BSPP threads typically seal with an O-ring or bonded seal washer, while BSPT threads create a seal through tapered thread engagement.
The table below shows standard BSP thread sizes and corresponding dimensions for accurate identification and system compatibility.
All our stainless steel BSP hydraulic adapters are manufactured in accordance with ISO 228 (BSPP) and ISO 7 (BSPT) standards.
| Inch size | Dash size | Thread Size | Male Thread O.D. (in) | Female thread O.D (in) |
|---|---|---|---|---|
| ⅛ | -2 | ⅛ – 28 | ⅜ | 0.38 |
| ¼ | -4 | ¼ – 19 | 33⁄64 | 0.52 |
| ⅜ | -6 | ⅜ – 19 | 21⁄32 | 0.65 |
| ½ | -8 | ½ – 14 | 13⁄16 | 0.82 |
| ⅝ | -10 | ⅝ – 14 | ⅞ | 0.88 |
| ¾ | -12 | ¾ – 14 | 1 1⁄32 | 1.04 |
| 1 | -16 | 1 – 11 | 1 5⁄16 | 1.30 |
| 1 ¼ | -20 | 1 ¼ – 11 | 1 21⁄32 | 1.65 |
| 1 ½ | -24 | 1 ½ – 11 | 1 7⁄8 | 1.88 |
| 2 | -32 | 2 – 11 | 2 11⁄32 | 2.35 |
Pressure Rating of BSP Hydraulic Adapters
Stainless steel BSP hydraulic adapters are designed for high-pressure hydraulic and fluid transfer systems using BSPP (parallel) or BSPT (tapered) thread configurations. Working pressure depends on thread type, sealing method, material grade, and adapter size.
BSPP connections typically seal with O-rings or bonded seal washers, while BSPT threads achieve sealing through tapered thread engagement.
The table below shows standard working pressure ratings based on ISO 228 (BSPP) and ISO 7 (BSPT) specifications.
| Tube outside diameter | Thread size | Rated pressure With O-ring MPa |
Rated pressure With O-ring (bar) |
Rated pressure Without O-ring MPa |
Rated pressure Without O-ring (bar) |
|---|---|---|---|---|---|
| 6 | G 1/8 A | – | – | 35 | (350) |
| 8 | G 1/4 A | 40 | (400) | 35 | (350) |
| 10 | G 3/8 A | 40 | (400) | 35 | (350) |
| 12 | G 1/2 A | 35 | (350) | 31,5 | (315) |
| 16 | G 5/8 A | 35 | (350) | 31,5 | (315) |
| 20 | G 3/4 A | 31,5 | (315) | 25 | (250) |
| 25 | G 1 A | 25 | (250) | 20 | (200) |
| 32 | G 1 ¼ A | 20 | (200) | 16 | (160) |
| 38 | G 1 ½ A | 16 | (160) | 12,5 | (125) |
| 50 | G 2 A | 12,5 | (125) | 8 | (80) |
Pressure Rating Notes
Pressure ratings may vary depending on assembly torque, operating temperature, vibration conditions, and system design.
Applications of Stainless Steel BSP Hydraulic Fittings
Stainless steel BSP hydraulic fittings are widely used in high-pressure fluid systems where corrosion resistance, sealing reliability, and long service life are essential.
Manufactured with BSPP (parallel) and BSPT (tapered) thread configurations, these fittings are commonly applied in European and international hydraulic systems.
Construction & Heavy Machinery
Vibration-resistant connections in mobile hydraulic systems.
Oil & Gas Equipment
High-pressure hydraulic lines exposed to aggressive environments.
Marine & Shipbuilding
Saltwater-resistant hydraulic systems requiring corrosion protection.
Agricultural Equipment
Outdoor hydraulic applications exposed to moisture and environmental stress.
Industrial Hydraulic Systems
Long-term durability in factory hydraulic operations.
Chemical Processing Industry
Stainless steel performance in corrosive fluid systems.
Frequently Asked Questions
BSPP (British Standard Pipe Parallel) threads are parallel and require an O-ring or bonded seal washer to create a leak-proof seal. BSPT (British Standard Pipe Tapered) threads are tapered and seal through thread interference during tightening.
BSPP threads comply with ISO 228, while BSPT threads follow ISO 7 standards. All stainless steel BSP hydraulic adapters are manufactured according to these international specifications for dimensional accuracy and compatibility.
BSPP adapters typically seal with O-rings, bonded seals, or copper washers. BSPT adapters achieve sealing through tapered thread engagement. Proper installation torque is important to ensure leak-free performance.
Our BSP hydraulic adapters are available in AISI 304, 316, 316L, and 316Ti stainless steel, offering excellent corrosion resistance for marine, chemical, and outdoor hydraulic applications.
Working pressure depends on thread size, material grade, and sealing method. Stainless steel BSP adapters are suitable for high-pressure hydraulic systems, with pressure ratings varying according to size and configuration.
Yes. We offer OEM manufacturing, custom thread configurations, special designs, and private labeling services for global distributors and equipment manufacturers.
Why Partner with Hydraxio for Stainless Steel Hydraulic Fittings?
✔ 20+ Years Stainless Steel Specialization
✔ 50+ CNC Precision Machines
✔ ISO-Certified Production & Inspection
✔ Global Bulk Supply to 50+ Countries
✔ OEM & Brand-Compatible Solutions
