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TYPE 3604/3604HTC/3604HTCDP
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Catalog excerpts

TYPE 3604/3604HTC/3604HTCDP - 1

METAL BELLOWS SEAL 3604/3604HTC/3604HTCDP Technical Specification A - Inner Bellows Assembly B - Primary Ring C - Packing D - Inner Mating Ring E - Flow Guide F -Spiral Wound Gasket G - Inner Gland H - Dual Scroll Pumping Device I -Outer Bellows Assembly J -Packing Follower K -Sleeve L -Outer Gland M - Outer Mating Ring^^B^^G N - Bushing O - Setting Spacer P -Mating Ring Retainer Product Description Performance Capabilities • Temperature: -75°C to 425°C/-100°F to 800°F • Pressure: single-ply: vacuum to 20 bar/300 psi (Consult basic pressure rating curve) double-ply: Vacuum to 42 bar/600 psi (Maximum pressure rating can vary, consult John Crane Engineering for maximum double-ply pressure rating for your specific application) • Speed: up to 50 m/s/10,000 fpm • Shaft Size: 30mm to 110mm/1.5" to 4.33" • API 682/ISO 21049 qualified • HTC technology. All-Inconel® metallurgy • Stationary bellows design to accomodate high shaft-to-seal chamber misalignment • Positively and pressure retained inner mating ring • Sealide-C advanced silicon carbide composite • ID and OD pressure capability - withstands reverse pressurization • Internal dual scroll pumping device • Carbon throttle bushing for effective containment • Double-ply bellows for higher pressure applications • Steam quench connection optional • Tapered bore inner gland promotes fluid movement for enhanced cooling Type 3604 - Dual pressurized stationary bellows cartridge seal Type C, Arrangement 3. Type 604 stationary inner and outer seal • Type 3604HTC - Dual pressurized stationary bellows cartridge seal Type C, Arrangement 3 that utilizes Type 604HTC technology • Type 3604HTCDP - Dual pressurized stationary bellows cartridge seal Type C, Arrangement 3 that utilizes Type 604HTC double-ply technology for higher pressure applications The Type 3604HTC and 3604HTCDP API 682/ISO 21049 cartridge seals utilize High-Temperature Corrosion Resistant (HTC) sealing technology for superior seal face stability at elevated temperatures. Enhanced seal face stability is achieved by minimizing thermal and mechanical forces that can contribute to seal face distortion extending your MTBR in many services. A double-ply version is available that greatly improves pressure carrying capability to reliably seal demanding higher pressure applications in a face-to-face cartridge arrangement. A taper bore inner gland design is used to promote fluid movement and cooling around the inner seal face pair. Stationary bellows designs are often used in high-temperature applications as they can accommodate high shaft-to-seal chamber misalignment. The design includes both a pressure retained and a positively retained inner mating ring which has the ability to handle higher reverse pre

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TYPE 3604/3604HTC/3604HTCDP - 2

METAL BELLOWS SEAL 3604/3604HTC/3604HTCDP Technical Specification Typical Type 3604 API Type C Arrangement 3 - Dual Cartridge A dual stationary Type 3604 seal with Type 604 inner seal and Type 604 outer seal. Typical Type 3604HTC/3604HTCDP API Type C Arrangement 3 - Dual Cartridge Retained Mating Ring for Reverse Pressure and Vacuum Service A dual seal with a Type 604HTC or 604HTCDP inner seal and Type 604 or 604DP outer seal. Typically used with API Plan 53(A, B, C). Non-internal circulation device arrangement. Typically used with API Plan 54. A dual seal with a Type 604HTC or 604HTCDP...

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TYPE 3604/3604HTC/3604HTCDP - 3

^METAL BELLOWS SEAL 3604/3604HTC/3604HTCDP Technical Specification Basic Pressure Rating 3604HTCType 3604HTC OD Pressure Rating (Single-ply) Type 3604HTC ID Pressure Rating (Single-ply) 50 75 Seal Size 1.Basic pressure rating curve based on single-ply bellows. 2.Basic pressure rating curve is differential pressure applied to seal outside diameter. 3.Consult John Crane for double-ply pressure rating. 1.Basic pressure rating curve based on single-ply bellows. 2.For applications above 315°C/600°F and 13.8 barg/200 psig, consult John Crane. 3.For arrangement 3 seals, use differential...

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TYPE 3604/3604HTC/3604HTCDP - 4

^METAL BELLOWS SEAL 3604/3604HTC/3604HTCDP Technical Specification Multiplier Factors *The ratio of sealed pressure to vapor pressure must be greater than 1.5, otherwise consult John Crane. If the specific gravity is less than 0.60, consult John Crane. 1. Specific gravity >0.6 and ratio of sealed pressure to vapor pressure >1.5. 2. More details regarding the fluid and the operating conditions are required. 3. Temperature at the seal faces includes effects of flush, quench and cooling. 4. Contact John Crane for more information. Example for Determining Pressure Rating Limits: Seal: type...

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TYPE 3604/3604HTC/3604HTCDP - 5

^METAL BELLOWS SEAL 3604/3604HTC/3604HTCDP Technical Specification Materials of Construction 3604HTC and 3604HTCDP SEAL COMPONENTS Materials of Construction 3604 SEAL COMPONENTS

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TYPE 3604/3604HTC/3604HTCDP - 6

^METAL BELLOWS SEAL 3604/3604HTC/3604HTCDP Technical Specification Double-ply Technology John Crane double-ply bellows utilizes a laminated double-ply construction that greatly improves strength and pressure carrying capability with a relatively low spring rate. The design principle can be illustrated by comparing it to the simple leaf spring. A spring comprised of a single, thick, metal member with the strength necessary to support a certain load would result in much too stiff a spring. But when the strength is obtained by using a “stack” of separate, individually flexing thin leaf...

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TYPE 3604/3604HTC/3604HTCDP - 7

^METAL BELLOWS SEAL 3604/3604HTC/3604HTCDP Technical Specification Recommendations for Viscous Fluids ■ Typical Applications 0 - 3500 cSt:Hard Face Material 3500 - 10,500 cSt: Consult John Crane NOTE: SSU (Saybolt Universal Seconds) approximately equals cSt (centistoke) x 4.6347cP (centipoise) = cSt (centistoke) x specific gravity. • Hydrocarbons • Aromatic fractionation products (benzene, toluene, solvents, etc.) • Crude oil fractionation products (fuel oil, lubricating oil, gasoline, etc.) • Chemicals, caustics, some acids, aqueous solutions, lubricating liquids • Heat transfer fluids...

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