Junio Gaskets Packings & Seals Limited

Junio-240SWG Sprial Wound Gasket Ring

sunhaihong — Wed, 08 Dec 2010 07:58:22 +0000

Centering ring

The centering ring does not come into direct contact with contained fluid. It is effective to avoid corrosion.

Inner ring

Inner ring is used to avoid excessive compression due to high seating stress in high-pressure service and it is also used to reduce turbulence in the flange area. It is normally made of the same material as the gasket metallic strip.

We can produce according to ASME, BS, JIS and EN (DIN) Standards or client request.

Semifinished RTJ

sunhaihong — Mon, 08 Nov 2010 01:17:14 +0000

Different Kinds of Semifinished Ring Joint Gaskets are available on request.

STYLE SRX-RING JOINT GASKETS

sunhaihong — Thu, 16 Sep 2010 07:50:25 +0000

Junio 240SRX-Ring Joint Gasket is the same in design to the RX Ring . To distinguish from Junio 240RX-Ring Type Joints the suffix “s” is used to indicate the additional pressure passage hold in the ring cross section. This is to indicate the additional requirement to prevent pressure lock when connections are made up underwater.

STYLE SBX-Ring Joint Gasket Dimensions

Tolerances: (mm)
#Tolerance on these dimensions is +0,-0.015” (+0,-0.4mm)
*Tolerance on these dimensions is +0.02”,-0 (+0.5mm,-0)
A* Width of Ring _____+0.20,-0.00
C Width of flat _______+0.15,-0.00
D Height of Cham ____+0,-0.8
H** Height of ring ____+0.20,-0.00
OD Od of Ring _______+0.5,-0.00
R1 Radius in ring______±0.05
Angle of 23° _________±0 deg 30 min

Junio 240SBX-Ring Joint Gaskets.pdf

STYLE SBX-RING JOINT GASKETS

sunhaihong — Thu, 16 Sep 2010 07:04:21 +0000

Junioseal is able to provide safe, dimensionally and functionally interchangeable subsea wellhead, mudline and tree equipment within the scope of API.

The performance requirement of pressure integrity, thermal integrity, material choice along with no observable leakage allowable are met with these sealing desires.

The Junio-240SBX Ring Type Joint is the same design as the BX Ring, however the suffix ‘S’ indicates that additional pressure equalisation holes have been drilled to prevent pressure lock in accordance with API 17D for use on sub sea wellhead and christmas tree equipment.

STYLE SBX-Ring Joint Gasket Dimensions

Tolerances: (mm)
A* Width of Ring _____+0.20,-0.00
C Width of flat _______+0.15,-0.00
D Hole Size _________±0.5
H*Height of ring _____+0.20,-0.00
OD Od of Ring _______+0,-0.15
ODT Od of flat _______±0.05
R __________________+0.20,-0.00
Angle of 23° _________±0 deg 15 min

Junio 240SBX-Ring Joint Gaskets.pdf

Lens Gaskets

sunhaihong — Tue, 24 Aug 2010 02:12:18 +0000

Junio 240L Lens gaskets are reusable, as the sealing effect is generally achieved by elastic deformation of the surfaces. The projected sealing width bG is calculated in relation to the angle a, which forms the sealing surface against the direction of the force (tubular axis) depending on the E modulus EG and the surface pressure exerted by bG = 100 ·σ/ EG · r ·sinα.

Junio 240L Lens gaskets are impervious to overpressure. With increasing loads, the contact surface between the spherical lens surface and the spherical flange groove increases, so that the surface pressure only increases to a lesser extent.

A disadvantage with standard sealing lenses is that, at high pressures and temperatures, the sealing lens can bulge along the circumference and weaken the tension of the connection. Also, at greater nominal diameter, the flange can become stuck in the area of the raised face diameter d5 and lift up at the sealing diameter.

Lens gasket limiting values

We can also specially produce bellows lenses, lens blind spectacle gaskets and half-lenses. Lens blind spectacle gaskets are made of a sealing lens and a lens blind, which are connected by a ligament. It is also usual to use lens blinds on their own. In this case, it is useful to weld on a small plate to render the lens blind distinguishable.

Junio 240Lens-Ring Gaskets.pdf

STYLE-R-OCTAGONAL RING GASKETS

sunhaihong — Mon, 05 Jul 2010 09:35:20 +0000

Style R octagonal gaskets are manufactured in accordance with both API 6A and ASME B16.20 size/ratings. Available in both oval and octagonal configurations, both types are interchangeable on modern octagonal type grooved flanges. Style R Ring Joint gaskets can be manufactured in accordance with all relevant standards to suit the following flange designations: API- 6A, ASME/ANSI B16.5, MSS SP44 (ASME B 16.47 Series A) & BS 1560.

Tolerances: ( MM )
Width of Ring ___________ ±0.2
Height of Ring __________ ±0.4
Pitch Diameter___________ ±0.18

(Octagonal) Angle of 23°___ ±0.5°

STYLE R Selection Chart

STYLE RX-RING JOINT GASKETS

sunhaihong — Mon, 05 Jul 2010 08:00:34 +0000

Style RX is a pressure-energized adaptation of the standard Style R gasket. The RX is designed to fit the same groove design as a standard Style R, making the joints interchangeable. The modified design uses a pressure-energized effect that improves the efficiency of the seal as the internal pressure of the system increases.

Tolerances: (mm)
Width of Ring __________ +0.20,-0.00
Height of Ring __________ +0.20,-0.00
(A plus tolerance of 0.20 mm for width and height is permitted, provided the variation in width or height does not exceed 0.10 mm throughout its entire circumference)
OD of Ring _____________ ±0.51,-0.00
Angle of 23°____________ ±0.5°

Note: Only Rings RX82 through RX91 have a pressure passage hole through the cross section. Center line of hole is located on the mid-point of the width flat.
Hole diameter shall be as follows:
RX82 through RX85_______ 1.52
RX86 and RX87__________ 2.29
Rings RX88 through RX91__ 3.05

Style RX Selection Chart

STYLE BX-RING JOINT GASKETS

sunhaihong — Sat, 03 Jul 2010 07:47:13 +0000

Style BX pressure energized gaskets are manufactured in accordance with API 6A and are designed for use on pressurized systems up to 20,000 PSI.

When correctly fitted, the style BX gasket allows virtual surface-to-surface contact of the flange faces, which means that the gasket is fully trapped on both the inner and outer diameters.

All BX gaskets incorporate a pressure balance hole to ensure equalization of pressure that may be trapped in the grooves.

Tolerances: (mm)
Width of Ring ______ +0.20,-0.00
Hole Size _________ ±0.5
Height of Ring _____ +0.20,-0.00
OD of Ring ________ +0.00,-0.15
Angle of 23° ______ ±0 deg 15 min

One pressure passage hole required per ring on centerline. A plus tolerance of 0.20 mm for width of ring and height of ring is permitted, provided the variation in width or height does not exceed 0.10 mm throughout its entire circumference.

NOTE: Radius of the ring shall be 8% to12% of the ring height.

Прокладки JUNIOSEAL RTJ-ВX предназначены для самых высоких классов давления до 20 000 psi. Для них требуются специальные посадочные места. Прокладки имеют двойную область уплотнения; устойчивы к выдуванию. Изготавливаются в стандартных размерах до NPS 30.

RING JOINT GASKETS

sunhaihong — Sat, 03 Jul 2010 05:12:21 +0000

Properties and Application

The metallic ring joint gaskets are manufactured according to the API 6A and ASME B16.20 standards for application at elevated temperatures and pressures. The small sealing area with high contact pressure results in great reliability. Some types of Junioseal ring-joints are pressure activated, that is, the greater the pressure the better the sealability. Our metal ring joint gaskets have been designed to withstand exceptionally high assembly loads over a small area, thus producing high seating stresses. The Junioseal ring joint gaskets are produced in several shapes and sizes, and are suitable for oil and gas pipeline flanges, pressure vessels, high speed joint faces, and other demanding applications.

Advantages

The metal ring joint gaskets have been designed to withstand exceptionally high assembly loads over a small area, thus producing high seating stresses.

Shape and Construction

The Junioseal ring joint gaskets are produced in several shapes and sizes to meet the most demanding applications.

R–Oval Type: Standard ring joint gasket with oval cross section and designed to flanges with standard ring joint grooves.
R–Octagonal: Standard ring joint gasket with octagonal Type cross section and designed for flanges with standard ring joint grooves. Interchangeable with oval section gaskets on modern octagonal grooved flanges.
RX: An adaptation of the standard R type gasket and designed to fit the same groove design. It is interchangeable with standard R type gaskets
BX: Specially designed for very high pressures. All BX gaskets incorporate a pressure balance hole to ensure equalization of pressure which may get trapped in the grooves. It is only suited for API BX flanges and grooves.
Subsea Gaskets: SRX Gaskets , SBX Gaskets
Lens Gaskets: Lens gaskets are reusable, as the sealing effect is generally achieved by elastic deformation of the surfaces.

Standard materials Recommended by the ANSI B16.20

ASTM	DIN Material.No.	Maximum HB	Maximum HV	Material code
Soft Iron	1.1003	90	56	D
Low CS	1.0038	120	68	S
4-6 Cr ½ Mo	1.7362	130	72	F5
AISI 410	1.4000	170	86	S 410
AISI 304	1.4301	160	83	S 304
AISI 316	1.4401	160	83	S 316
AISI 347	1.4550	160	83	S 347

Dimensions STANDARDS for Ring Joint Gaskets Used with Flanges

Ring Joints Gaskets style	Ring Joints Gaskets Standard	Flange Standard
R	ASME B 16.20 API 6A	ANSI B 16. 5 ANSI B 16.47 series A
RX	ASME B 16.20 API 6A	API 6B
BX	API 6A	API 6BX

Junio Ring Joint Gaskets Brochure.pdf

STYLE R-OVAL-RING JOINT GASKET

sunhaihong — Sat, 19 Jun 2010 16:44:32 +0000

Style R gaskets are manufactured in accordance with both API 6A and ASME B16.20 size/ratings. Available in both oval and octagonal configurations, both types are interchangeable on modern octagonal type grooved flanges.

Style R Ring Joint gaskets can be manufactured in accordance with all relevant standards to suit the following flange designations: API- 6A, ASME/ANSI B16.5, MSS SP44 (ASME B 16.47 Series A) & BS 1560.

Tolerances: (MM)
Width of Ring _____________ ±0.20
Height of Ring ____________ ±0.50
Pitch Diameter_____________ ±0.18
(Octagonal) Angle of 23°_____ ±0.5°

STYLE R Selection Chart