Nippon PILLAR

About Nippon Pillar

Since developing the world’s first semi-metallic cylindrical packing for steamboats in 1924, NPPC has been a leading company in the Asian seal industry for over 80 years. Through the years, our products have expanded from gland packing for ships to gaskets, mechanical seals and to fluroresin products utilized in semiconductor manufacturing products along with the changing times. NIPPON PILLAR is proud to contribute to environmental protection through our sealing technology. The origin of the company name comes from the fact that our “Patented Pillar Packing No.1″ developed in 1924 was pillar-shaped.

MECHANICAL SEALS

Cartridge Mechanical Seal

Pillar Cassette Seal

PILLAR CASSETTE SEAL

Product code : AEU80-KEQ72

Type : Unbalanced type rotary seal, Inside type, General-purpose design type

Product information : Cassette seal of rotary seal structure.
Since it is configured as a cartridge, the seal can be installed in equipment in four steps. Integrated components (spring retainer and sleeve) simplify maintenance work.

Main applications : Pumps handling water, oil, and solvent

Specifications :
Maximum operating pressure: 0.8 MPaG max.
Peripheral velocity (shaft diameter): 20 m/s max.
Operating temperature range: -20 to 150°C

Product category : Mechanical seals / Cartridge mechanical seals

Non-Cartridge Mechanical Seal

Unbalanced Type Rotary Seal

UNBALANCED TYPE ROTARY SEAL

Product code : AAU10

Model / Style : A1

Type : Unbalanced type rotary seal, Multi-spring O-ring type

Product information : Typical unbalanced type rotary seal used in various industries. This seal uses an O-ring for shaft packing and features a multi-spring structure that performs stably in diverse applications.

Main applications : Process pumps, mixers, blowers, etc.

Specifications :
Pressure: 1.2 MPaG
Peripheral velocity: 20 m/s
Nominal size: φ20 to φ250

Product category : Mechanical seals / Non-Cartridge mechanical seals

Gas Seal

Pillar Phoenix-Seal Dynamic Pressure Dry Gas Seal

PILLAR PHOENIX-SEAL DYNAMIC PRESSURE DRY GAS SEAL

Product code : PPG-1R

Type : Non-contact type dynamic pressure dry gas seal, Balanced type rotary seal

Product information : Dynamic pressure seal featuring original grooves on the sealing face. It provides a multi-barrier structure that effectively utilizes dynamic pressure.

Main applications : Blowers, compressors, mixer top seals

Product category : Mechanical seals / Gas seals

End-face Sliding rubber seals

G1 Series Seal

G1 SERIES SEAL

Product code : G1-FL

Type : End-face sliding rubber seals for flocculator

Product information : This series has been optimized for flocculators frequently used in water supply and sewage treatment plants. Its design allows all parts to be detached, enabling maintenance, sliding part replacement, and assembly replacement without removing the shaft connected to the mixing blades.

Main applications : Flocculator

Specifications :
Maximum operating pressure: 0.2 MPaG
Maximum operating peripheral velocity: 6 m/sec
Applicable shaft diameter: φ60 to φ250

Product category : Mechanical seals / End-face sliding rubber seals

GASKETS

Sheet Gaskets

5611 Joint Sheet Gasket

№5611 JOINT SHEET GASKET

Product code : 5611

Product information : General-purpose joint sheet gasket made of inorganic fiber and aramid fiber mixed with a rubber binder. This gasket offers high elasticity, minimal creeping, and a smooth surface. It fits flange surfaces easily and provides excellent sealability.

Main constituent materials : Inorganic fiber, aramid fiber, and organic binder

Specifications :
Operating temperature: -50 to +120°C
Operating pressure: 3.3 MPaG (JIS20K)
Gasket factor (m value): 3.5 (t ≤ 1.0), 2.75 (t 1.5, 2.0), 2.00 (t 3.0)
Minimum design seating stress (y value): 44.8 (t ≤ 1.0), 25.5 (t 1.5, 2.0), 11.0 (t 3.0) N/mm²
Minimum seating stress (y value): 14.7 N/mm² (Water/oil fluid)
39.2 N/mm² (t ≤ 2.0) (Gas fluid)

Product category : Gaskets / Sheet gaskets

Spiral Wound Gaskets

2302 Spiral Wound Gasket

№2302 SPIRAL WOUND GASKET

Product code : 2302

Type : With outer ring
Filler material: PILAFLON™

Product information : Spiral wound gasket with 100% PTFE soft tape filler. Provides strong chemical resistance and high flexibility. This gasket is particularly recommended for piping lines requiring resistance to chemicals, solvents, and similar fluids.

Main constituent materials : PTFE and various metals

Specifications :
Operating temperature range: -200 to +260°C
Maximum operating pressure: 15.5 MPaG (Class 900)
Gasket factor (m value): 3
Minimum design seating stress (y value): 68.9 N/mm²
Minimum seating stress (y value): 39.2 N/mm²

Color : White

Product category : Gaskets / Spiral wound gaskets

Semi Metallic Gaskets

6815DJ PILLARFOIL Yarn Braided Packing

№6815DJ PILLARFOIL™ YARN BRAIDED PACKING

Product code : 6815DJ

Type : Seal packing

Product information : Ring-shaped braided seal for dresser joints, made of flexible graphite yarn covered in stainless steel wire. The yarn is impregnated with a heat-resistant lubricant to prevent liquid penetration. The cross-section is formed into a wedge shape. This packing can be used across a wide temperature range and offers superior heat resistance compared to elastomer packings.

It is suitable for fly ash transfer lines of dust collector hoppers, desulfurization equipment, and similar applications. This packing also provides a higher cushioning effect than conventional products, resulting in improved sealing performance.

Main constituent materials : Graphite and stainless steel

Specifications :
Operating temperature: -200 to +650°C
Operating pressure: F.V. to atmospheric pressure

Color : Black

Product category : Gaskets / Semi-metallic gaskets

Metallic Gaskets

6815DJ PILLARFOIL Yarn Braided Packing

№6815DJ PILLARFOIL™ YARN BRAIDED PACKING

Product code : 6815DJ

Type : Seal packing

Product information : Ring-shaped braided seal for dresser joints, made of flexible graphite yarn covered in stainless steel wire. The yarn is impregnated with a heat-resistant lubricant to prevent liquid penetration. The cross-section is formed into a wedge shape. This packing can be used across a wide temperature range and offers superior heat resistance compared to elastomer packings.

It is suitable for fly ash transfer lines of dust collector hoppers, desulfurization equipment, and similar applications. This packing also provides a higher cushioning effect than conventional products, resulting in improved sealing performance.

Main constituent materials : Graphite and stainless steel

Specifications :
Operating temperature: -200 to +650°C
Operating pressure: F.V. to atmospheric pressure

Color : Black

Product category : Gaskets / Semi-metallic gaskets

GLAND PACKINGS

For Rotating equipment

426 Ramie Packing

№426 RAMIE PACKING

Product code : 426

Type : Seal packing

Product information : Square-braid gland packing made with ramie fiber impregnated with white grease. This packing offers excellent shaft adaptability, high elasticity, and low sliding friction on the shaft. It is widely used as a stern tube shaft seal.

Main constituent materials : Ramie fiber and special lubricant

Specifications :
Fluid temperature: +80°C max.
Peripheral velocity: 10 m/s max.
Pressure: 0.5 MPaG max.
PV value: 2.5 MPaG・m/s or less
pH: 6 to 8

Color : Ivory

Product category : Gland packings / For rotating equipments

For Valves

6528 High-Strength Carbon Fiber Packing

№6528 HIGH-STRENGTH CARBON FIBER PACKING

Product code : 6528

Type : Adapter packing

Product information : Interlocking-braid adapter packing made of PAN-based carbon fiber treated with a small amount of binder and lubricant.

Main constituent materials : Carbon fiber, graphite, and binder

Specifications :
Fluid temperature: -200 to +500°C
Pressure: 43.1 MPaG max. (Class 2500)
pH: 0 to 14

Color : Black

Product category : Gland packings / For valves

Seal Units

6300 PILLAR LIVE LOADING Seal Unit

№6300 PILLAR LIVE LOADING SEAL UNIT

Product code : 6300

Product information : Gland packing tightening force is maintained by spring pressure, which reduces maintenance requirements. The spring collar also visualizes the tightening time and tightening control.

By combining various PILLAR gland packing products designed for specific operating conditions, maintenance tasks can be reduced and the overall work environment improved. This seal unit is suitable for low-speed rotary machines handling powders, high-viscosity fluids, or equipment prone to shaft runouts.

Product category : Gland packings / Seal units